diff --git a/app/assets/stylesheets/bootstrap_and_overrides.css.less b/app/assets/stylesheets/bootstrap_and_overrides.css.less
index 614b2732..a7e25293 100644
--- a/app/assets/stylesheets/bootstrap_and_overrides.css.less
+++ b/app/assets/stylesheets/bootstrap_and_overrides.css.less
@@ -140,6 +140,23 @@ table {
   text-align: center;
 }
 
+// Navigation with embedded tabs
+.nav-tabs-with-heading {
+  > li {
+    line-height: 40px;
+    margin-top: 16.5px;
+    a { padding-bottom: 9px; }
+  }
+  > li.heading {
+    > h1, > h2, > h3 {
+      font-size: 31.5px;
+      line-height: 40px;
+      margin: 0;
+    }
+    margin: 10px 1em 5px 0;
+  }
+}
+
 // Tasks ..
 .accepted {
   color: #468847;
@@ -324,6 +341,15 @@ table.table {
   }
 }
 
+// inline (boolean) position after/before heading
+label {
+  h1, h2, h3, h4 {
+    input[type=checkbox] {
+      margin: auto 0.3em auto 0.3em;
+    }
+  }
+}
+
 // it's a bit distracting
 .icon-asterisk {
   font-size: 80%;
diff --git a/app/controllers/admin/configs_controller.rb b/app/controllers/admin/configs_controller.rb
new file mode 100644
index 00000000..04d93b4f
--- /dev/null
+++ b/app/controllers/admin/configs_controller.rb
@@ -0,0 +1,39 @@
+class Admin::ConfigsController < Admin::BaseController
+
+  before_action :get_tabs, only: [:show, :list]
+
+  def show
+    @current_tab = @tabs.include?(params[:tab]) ? params[:tab] : @tabs.first
+    @cfg = FoodsoftConfig
+  end
+
+  def list
+    @current_tab = 'list'
+    @cfg = FoodsoftConfig
+    @dfl = FoodsoftConfig.config
+    @keys = FoodsoftConfig.keys.select {|k| FoodsoftConfig.allowed_key?(k)}.sort
+  end
+
+  def update
+    ActiveRecord::Base.transaction do
+      # TODO support nested configuration keys
+      params[:config].each do |key, val|
+        FoodsoftConfig[key] = val
+      end
+    end
+    flash[:notice] = I18n.t('admin.configs.update.notice')
+    redirect_to action: 'show'
+  end
+
+  protected
+
+  # Set configuration tab names as `@tabs`
+  def get_tabs
+    @tabs = %w(foodcoop payment tasks messages layout language others)
+    # allow engines to modify this list
+    engines = Rails::Engine.subclasses.map(&:instance).select { |e| e.respond_to?(:configuration) }
+    engines.each { |e| e.configuration(@tabs, self) }
+    @tabs.uniq!
+  end
+
+end
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 3574ef44..3a01550a 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -6,6 +6,7 @@ class ApplicationController < ActionController::Base
   protect_from_forgery
   before_filter  :select_foodcoop, :authenticate, :store_controller, :items_per_page
   after_filter  :remove_controller
+  around_filter :set_time_zone, :set_currency
 
   
   # Returns the controller handling the current request.
@@ -167,5 +168,28 @@ class ApplicationController < ActionController::Base
   def default_url_options(options = {})
     {foodcoop: FoodsoftConfig.scope}
   end
-  
+
+  # Set timezone according to foodcoop preference.
+  # @see http://stackoverflow.com/questions/4362663/timezone-with-rails-3
+  # @see http://archives.ryandaigle.com/articles/2008/1/25/what-s-new-in-edge-rails-easier-timezones
+  def set_time_zone
+    old_time_zone = Time.zone
+    Time.zone = FoodsoftConfig[:time_zone] if FoodsoftConfig[:time_zone]
+    yield
+  ensure
+    Time.zone = old_time_zone
+  end
+
+  # Set currency according to foodcoop preference.
+  # @see #set_time_zone
+  def set_currency
+    old_currency = ::I18n.t('number.currency.format.unit')
+    new_currency = FoodsoftConfig[:currency_unit] || ''
+    new_currency += "\u202f" if FoodsoftConfig[:currency_space]
+    ::I18n.backend.store_translations(::I18n.locale, number: {currency: {format: {unit: new_currency}}})
+    yield
+  ensure
+    ::I18n.backend.store_translations(::I18n.locale, number: {currency: {format: {unit: old_currency}}})
+  end
+
 end
diff --git a/app/helpers/admin/configs_helper.rb b/app/helpers/admin/configs_helper.rb
new file mode 100644
index 00000000..37e16185
--- /dev/null
+++ b/app/helpers/admin/configs_helper.rb
@@ -0,0 +1,131 @@
+module Admin::ConfigsHelper
+  # Returns form input for configuration key.
+  #   For configuration keys that contain a {Hash}, {ActiveView::Helpers::FormBuilder#fields_for fields_for} can be used.
+  #   When the key is not {FoodsoftConfig#allowed_key? allowed}, +nil+ is returned.
+  # @param form [ActionView::Helpers::FormBuilder] Form object.
+  # @param key [Symbol, String] Configuration key.
+  # @param options [Hash] Options passed to the form builder.
+  # @option options [Boolean] :required Wether field is shown as required (default not).
+  # @return [String] Form input for configuration key.
+  # @todo find way to pass current value to time_zone input without using default
+  def config_input(form, key, options = {}, &block)
+    return unless @cfg.allowed_key? key
+    options[:label] = config_input_label(form, key)
+    options[:required] ||= false
+    options[:input_html] ||= {}
+    config_input_field_options form, key, options[:input_html]
+    config_input_tooltip_options form, key, options[:input_html]
+    if options[:as] == :boolean
+      options[:input_html][:checked] = 'checked' if v=options[:input_html].delete(:value) and v!='false'
+      options[:checked_value] = 'true' if options[:checked_value].nil?
+      options[:unchecked_value] = 'false' if options[:unchecked_value].nil?
+    elsif options[:collection] or options[:as] == :select
+      options[:selected] = options[:input_html].delete(:value)
+      return form.input key, options, &block
+    elsif options[:as] == :time_zone
+      options[:default] = options[:input_html].delete(:value)
+      return form.input key, options, &block
+    end
+    form.input key, options, &block
+  end
+
+  # @return [String] Label name in form for configuration key.
+  # @param form [ActionView::Helpers::FormBuilder] Form object.
+  # @param key [Symbol, String] Configuration key.
+  # @see #config_input
+  def config_input_label(form, key)
+    cfg_path = form.lookup_model_names[1..-1] + [key]
+    I18n.t("config.keys.#{cfg_path.map(&:to_s).join('.')}")
+  end
+
+  # @return [String] Form input field for configuration key.
+  # @see config_input
+  # @option options [String] :checked_value Value for boolean when checked (default +true+)
+  # @option options [String] :unchecked_value Value for boolean when not checked (default +false+)
+  # @todo find out how to pass +checked_value+ and +unchecked_value+ to +input_field+
+  def config_input_field(form, key, options = {})
+    return unless @cfg.allowed_key? :key
+    options[:required] ||= false
+    config_input_field_options form, key, options
+    config_input_tooltip_options form, key, options
+    if options[:as] == :boolean
+      checked_value = options.delete(:checked_value) || 'true'
+      unchecked_value = options.delete(:unchecked_value) || 'false'
+      options[:checked] = 'checked' if v=options.delete(:value) and v!='false'
+      form.hidden_field(key, value: unchecked_value, as: :hidden) + form.check_box(key, options, checked_value, false)
+    else
+      form.input_field key, options
+    end
+  end
+
+  # @return [String] Form heading with checkbox with block passed in expandable +fieldset+.
+  # @param form [ActionView::Helpers::FormBuilder] Form object.
+  # @param key [Symbol, String] Configuration key of a boolean (e.g. +use_messages+).
+  # @option options [String] :label Label to show
+  def config_use_heading(form, key, options = {})
+    head = content_tag :label do
+     lbl = options[:label] || config_input_label(form, key)
+     field = config_input_field(form, key, as: :boolean, boolean_style: :inline,
+                                data: {toggle: 'collapse', target: "##{key}-fields"}) 
+     content_tag :h4 do
+       # put in span to keep space for tooltip at right
+       content_tag :span, (lbl + field).html_safe, config_input_tooltip_options(form, key, {})
+     end
+    end
+    fields = content_tag(:fieldset, id: "#{key}-fields", class: "collapse#{' in' if @cfg[key]}") do
+      yield
+    end
+    head + fields
+  end
+
+  # Returns configuration value suitable for rendering in HTML.
+  #   Makes keys different from +app_config.yml+ configuration bold,
+  #   protects sensitive values like keys and passwords, and makes
+  #   links from URLs.
+  # @param key [String] Configuration key
+  # @param value [String] Configuration value
+  # @return [String] Configuration value suitable for rendering in HTML.
+  def show_config_value(key, value)
+    if key =~ /passw|secr|key/
+      '(protected)'
+    elsif value.is_a? Hash
+      content_tag :ul do
+        value.map do |k,v|
+          content_tag :li, content_tag(:tt, "#{k}: ") + show_config_value(k, v).to_s
+        end.join.html_safe
+      end
+    elsif value.is_a? Enumerable
+      content_tag :ul, value.map {|v| content_tag :li, h(v)}.join.html_safe
+    elsif key =~ /url|website|www|homepage/
+      link_to(value, value).html_safe
+    else
+      value
+    end
+  end
+
+  private
+
+  def config_input_tooltip_options(form, key, options)
+    # tooltip with help info to the right
+    cfg_path = form.lookup_model_names[1..-1] + [key]
+    tooltip = I18n.t("config.hints.#{cfg_path.map(&:to_s).join('.')}", default: '')
+    unless tooltip.blank?
+      options[:data] ||= {}
+      options[:data][:toggle] ||= 'tooltip'
+      options[:data][:placement] ||= 'right'
+      options[:title] ||= tooltip
+    end
+    options
+  end
+
+  def config_input_field_options(form, key, options)
+    cfg_path = form.lookup_model_names[1..-1] + [key]
+    # set current value
+    unless options.has_key?(:value)
+      value = @cfg
+      cfg_path.each {|n| value = value[n.to_sym] if value.respond_to? :[] }
+      options[:value] = value
+    end
+    options
+  end
+end
diff --git a/app/views/admin/configs/_tab_foodcoop.html.haml b/app/views/admin/configs/_tab_foodcoop.html.haml
new file mode 100644
index 00000000..5aea80c2
--- /dev/null
+++ b/app/views/admin/configs/_tab_foodcoop.html.haml
@@ -0,0 +1,10 @@
+= config_input form, :name, required: true, input_html: {class: 'input-xlarge'}
+= form.fields_for :contact do |c|
+  = config_input c, :street, input_html: {class: 'input-xlarge'}
+  .fold-line
+    = config_input c, :zip_code, input_html: {class: 'input-mini'}
+    = config_input c, :city, input_html: {class: 'input-medium'}
+  = config_input c, :country, as: :string, input_html: {class: 'input-xlarge'}
+  = config_input c, :email, required: true, input_html: {class: 'input-xlarge'}
+  = config_input c, :phone, input_html: {class: 'input-medium'}
+= config_input form, :homepage, required: true, as: :url, input_html: {class: 'input-xlarge'}
diff --git a/app/views/admin/configs/_tab_language.html.haml b/app/views/admin/configs/_tab_language.html.haml
new file mode 100644
index 00000000..55cb3cfd
--- /dev/null
+++ b/app/views/admin/configs/_tab_language.html.haml
@@ -0,0 +1,9 @@
+= config_input form, :default_locale,
+               collection: I18n.available_locales.map {|l| [t("simple_form.options.settings.profile.language.#{l}"), l]}
+= config_input form, :ignore_browser_locale, as: :boolean
+= config_input form, :time_zone, as: :time_zone, include_blank: true, input_html: {class: 'input-xlarge'}
+= config_input form, :currency_unit do
+  = config_input_field form, :currency_unit, class: 'input-mini'
+  %label.inline
+    = config_input_label form, :currency_space
+    = config_input_field form, :currency_space, as: :boolean
diff --git a/app/views/admin/configs/_tab_layout.html.haml b/app/views/admin/configs/_tab_layout.html.haml
new file mode 100644
index 00000000..b27882d8
--- /dev/null
+++ b/app/views/admin/configs/_tab_layout.html.haml
@@ -0,0 +1,15 @@
+= config_input form, :page_footer, as: :text, input_html: {class: 'input-xxlarge', rows: 2, placeholder: "#{link_to(FoodsoftConfig[:name], FoodsoftConfig[:homepage])}"}
+= config_input form, :custom_css, as: :text, input_html: {class: 'input-xxlarge', rows: 3}
+
+%h4= t '.pdf_title'
+.fold-line
+  = config_input form, :pdf_font_size, as: :integer, input_html: {class: 'input-mini'}
+  = config_input form, :pdf_page_size, input_html: {class: 'input-medium'}
+= config_input form, :pdf_add_page_breaks do
+  = form.simple_fields_for :pdf_add_page_breaks do |fields|
+    %label
+      = config_input_field fields, :order_by_groups, as: :boolean
+      = t 'config.hints.pdf_add_page_breaks.order_by_groups'
+    %label
+      = config_input_field fields, :order_by_articles, as: :boolean
+      = t 'config.hints.pdf_add_page_breaks.order_by_articles'
diff --git a/app/views/admin/configs/_tab_messages.html.haml b/app/views/admin/configs/_tab_messages.html.haml
new file mode 100644
index 00000000..5ffd4e54
--- /dev/null
+++ b/app/views/admin/configs/_tab_messages.html.haml
@@ -0,0 +1,7 @@
+%fieldset
+  %label
+    %h4= t '.emails_title'
+  = config_input form, :email_from, as: :string, input_html: {class: 'input-xlarge', placeholder: "#{@cfg[:name]} <#{@cfg[:contact][:email]}>"}
+  = config_input form, :email_replyto, as: :string, input_html: {class: 'input-xlarge'}
+-# sender is better configured by server administrator, since it affects SPF records
+-#= config_input form, :email_sender, as: :string, input_html: {class: 'input-xlarge'}
diff --git a/app/views/admin/configs/_tab_others.html.haml b/app/views/admin/configs/_tab_others.html.haml
new file mode 100644
index 00000000..69bb2867
--- /dev/null
+++ b/app/views/admin/configs/_tab_others.html.haml
@@ -0,0 +1,5 @@
+- if defined? FoodsoftWiki # avoid requiring deface here (the single exception)
+  = config_input form, :use_wiki, as: :boolean
+= config_input form, :use_nick, as: :boolean
+= config_input form, :tolerance_is_costly, as: :boolean
+= config_input form, :help_url, as: :url, input_html: {class: 'input-xlarge'}
diff --git a/app/views/admin/configs/_tab_payment.html.haml b/app/views/admin/configs/_tab_payment.html.haml
new file mode 100644
index 00000000..d3d62cc6
--- /dev/null
+++ b/app/views/admin/configs/_tab_payment.html.haml
@@ -0,0 +1,12 @@
+= config_input form, :price_markup do
+  .input-append
+    = config_input_field form, :price_markup, as: :decimal, class: 'input-mini'
+    %span.add-on %
+= config_input form, :tax_default do
+  .input-append
+    = config_input_field form, :tax_default, as: :decimal, class: 'input-mini'
+    %span.add-on %
+= config_input form, :minimum_balance do
+  .input-prepend
+    %span.add-on= t 'number.currency.format.unit'
+    = config_input_field form, :minimum_balance, as: :decimal, class: 'input-small'
diff --git a/app/views/admin/configs/_tab_tasks.html.haml b/app/views/admin/configs/_tab_tasks.html.haml
new file mode 100644
index 00000000..180e789a
--- /dev/null
+++ b/app/views/admin/configs/_tab_tasks.html.haml
@@ -0,0 +1,3 @@
+-#= config_use_heading form, :use_tasks do
+= config_use_heading form, :use_apple_points do
+  = config_input form, :stop_ordering_under, as: :numeric, input_html: {class: 'input-small'}
diff --git a/app/views/admin/configs/_tabs.html.haml b/app/views/admin/configs/_tabs.html.haml
new file mode 100644
index 00000000..6db4cebf
--- /dev/null
+++ b/app/views/admin/configs/_tabs.html.haml
@@ -0,0 +1,11 @@
+%ul.nav.nav-tabs.nav-tabs-with-heading
+  %li.heading
+    %h1= t '.title'
+
+  - for tab in @tabs
+    - url = action_name == 'show' ? nil : admin_config_path(tab: tab)
+    %li{class: ('active' if @current_tab==tab)}= link_to t("config.tabs.#{tab}"), "#{url}#tab-#{tab}", data: ({toggle: 'tab'} unless url)
+
+  -# make this a button to give some indicator that navigation away might lose changes
+  %li.pull-right{class: ('active' if @current_tab=='list')}
+    = link_to t('config.tabs.list'), list_admin_config_path, class: ('btn' unless @current_tab=='list')
diff --git a/app/views/admin/configs/list.html.haml b/app/views/admin/configs/list.html.haml
new file mode 100644
index 00000000..be6148b4
--- /dev/null
+++ b/app/views/admin/configs/list.html.haml
@@ -0,0 +1,16 @@
+- title t('.title'), false
+
+= render 'tabs'
+
+%table.table
+  %thead
+    %tr
+      %th= t '.key'
+      %th= t '.value'
+  %tbody
+    - @keys.each do |key|
+      %tr
+        %td
+          %tt= key
+        %td{style: if @cfg[key] != @dfl[key] then 'font-weight: bold' end}
+          = show_config_value key, @cfg[key]
diff --git a/app/views/admin/configs/show.html.haml b/app/views/admin/configs/show.html.haml
new file mode 100644
index 00000000..671121cc
--- /dev/null
+++ b/app/views/admin/configs/show.html.haml
@@ -0,0 +1,13 @@
+- title t('admin.configs.tabs.title'), false
+
+= simple_form_for :config, method: :patch do |f|
+
+  = render 'tabs', url: nil
+
+  .tab-content
+    - for tab in @tabs
+      .tab-pane{class: ('active' if @current_tab==tab), id: "tab-#{tab}"}= render "tab_#{tab}", form: f
+
+  .form-actions
+    = f.submit t('.submit'), class: 'btn btn-primary'
+
diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index bf65a3d9..506cd51b 100644
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -10,9 +10,9 @@
         %li= link_to t('.profile'), my_profile_path
         %li= link_to t('.ordergroup'), my_ordergroup_path
         %li= link_to t('.logout'), logout_path
-    %li{class: ('disabled' if FoodsoftConfig.config[:homepage].blank?)}
-      = link_to FoodsoftConfig.config[:name], FoodsoftConfig.config[:homepage]
-    %li= link_to t('.help'), FoodsoftConfig.config[:help_url]
+    %li{class: ('disabled' if FoodsoftConfig[:homepage].blank?)}
+      = link_to FoodsoftConfig[:name], FoodsoftConfig[:homepage]
+    %li= link_to t('.help'), FoodsoftConfig[:help_url]
     %li= link_to t('.feedback.title'), new_feedback_path, title: t('.feedback.desc')
   .clearfix
 
diff --git a/config/app_config.yml.SAMPLE b/config/app_config.yml.SAMPLE
index fbb4731e..a455f113 100644
--- a/config/app_config.yml.SAMPLE
+++ b/config/app_config.yml.SAMPLE
@@ -37,6 +37,11 @@ default: &defaults
   # In case you really want foodsoft in a certain language by default, set this to true.
   # When members are logged in, the language from their profile settings is still used.
   #ignore_browser_locale: false
+  # Default timezone, e.g. UTC, Amsterdam, Berlin, etc.
+  #time_zone: Berlin
+  # Currency symbol, and whether to add a whitespace after the unit.
+  #currency_unit: €
+  #currency_space: true
 
   # price markup in percent
   price_markup: 2.0
diff --git a/config/environments/test.rb b/config/environments/test.rb
index f389ad59..f0349f7c 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -7,6 +7,9 @@ Foodsoft::Application.configure do
   # and recreated between test runs. Don't rely on the data there!
   config.cache_classes = true
 
+  # We clear the cache for each test, let's do that in memory.
+  config.cache_store = :memory_store
+
   # Do not eager load code on boot. This avoids loading your whole application
   # just for the purpose of running a single test. If you are using a tool that
   # preloads Rails for running tests, you may have to set it to true.
diff --git a/config/initializers/currency_display.rb b/config/initializers/currency_display.rb
new file mode 100644
index 00000000..191f255c
--- /dev/null
+++ b/config/initializers/currency_display.rb
@@ -0,0 +1,7 @@
+# remove all currency translations, so that we can set the default language and
+# have it shown in all other languages too
+::I18n.available_locales.each do |locale|
+  unless locale == ::I18n.default_locale
+    ::I18n.backend.store_translations(locale, number: {currency: {format: {unit: nil}}})
+  end
+end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 154c50a3..db2e37a0 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -225,6 +225,22 @@ en:
         title: Administration
         type: type
         username: username
+    configs:
+      list:
+        title: Configuration list
+        key: Key
+        value: Value
+      show:
+        title: Configuration
+        submit: Save
+      tab_layout:
+        pdf_title: PDF documents
+      tabs:
+        title: Configuration
+      tab_messages:
+        emails_title: Sending email
+      update:
+        notice: Configuration saved.
     confirm: Do you really want to delete %{name}?
     ordergroups:
       destroy:
@@ -419,6 +435,84 @@ en:
       file_label: Please choose a compatible file
       submit: Upload file
       title: '%{supplier} / upload articles'
+  config:
+    tabs:
+      foodcoop: Foodcoop
+      payment: Finances
+      language: Language
+      messages: Messages
+      tasks: Tasks
+      layout: Layout
+      others: Other
+      list: List
+    hints:
+      name: The name of your foodcoop.
+      contact:
+        email: General contact email address, shown on website as well as some forms.
+        street: Address, typically this will be your delivery and pick-up location.
+      currency_unit: Currency symbol for displaying prices.
+      currency_space: Whether to add whitespace after the currency symbol.
+      custom_css: To modify the layout of this site, you can enter style modifications using the cascading stylesheets (CSS) language. Leave blank for the default style.
+      homepage: Website of your foodcoop.
+      help_url: Documentation website.
+      applepear_url: Website where the apple and pear system for tasks is explained.
+      ignore_browser_locale: "Ignore the language of user's computer when the user has not chosen a language yet."
+      price_markup: Percentage that is added to the gross price for foodcoop members.
+      tax_default: Default VAT percentage for new articles.
+      stop_ordering_under: Members can only order when they have at least this many apple points.
+      minimum_balance: Members can only order when their account balance is above or equal to this amount.
+      use_apple_points: When the apple point system is enabled, members are required to do some tasks to be able to keep ordering.
+      use_nick: Show and use nicknames instead of real names. When enabling this, please check that each user has a nickname.
+      use_messages: Allow members to communicate with each other within Foodsoft.
+      use_wiki: Enable editable wiki pages.
+      email_sender: "Emails will appear to be sent from this email address. To avoid emails sent being classified as spam, the webserver may need to be registered in the SPF record of the email address's domain."
+      email_from: "Emails will appear to be from this email address. Leave empty to use the foodcoop's contact address."
+      email_replyto: Set this when you want to receive replies from emails sent by Foodsoft on a different address than the above.
+      mailing_list: Mailing-list email address to use instead of the messaging system for mail to all members.
+      mailing_list_subscribe: Email address where members can send an email to for subscribing.
+      page_footer: 'Shown on each page at the bottom. Enter "blank" to disable the footer completely.'
+      pdf_font_size: Base font size for PDF documents (12 is standard).
+      pdf_page_size: 'Page size for PDF documents, typically "A4" or "letter".'
+      pdf_add_page_breaks:
+        order_by_articles: Put each article on a separate page.
+        order_by_groups: Put each ordergroup on a separate page.
+      tolerance_is_costly: "Order as much of the member tolerance as possible (compared to only as much needed to fill the last box). Enabling this also includes the tolerance in the total price of the open member order."
+    keys:
+      name: Name
+      contact:
+        street: Street
+        zip_code: Postcode
+        city: City
+        country: Country
+        email: Email
+        phone: Phone
+      currency_unit: Currency
+      currency_space: add space
+      custom_css: Custom CSS
+      homepage: Homepage
+      help_url: Documentation URL
+      applepear_url: Apple system URL
+      default_locale: Default language
+      ignore_browser_locale: Ignore browser language
+      price_markup: Foodcoop margin
+      tax_default: Default VAT
+      tolerance_is_costly: Tolerance is costly
+      stop_ordering_under: Minimum apple points
+      use_apple_points: Apple points
+      minimum_balance: Minimum account balance
+      use_nick: Use nicknames
+      use_messages: Enable messages
+      use_wiki: Enable wiki
+      email_sender: Sender address
+      email_from: From address
+      email_replyto: Reply-to address
+      mailing_list: Mailing-list
+      mailing_list_subscribe: Mailing-list subscribe
+      page_footer: Page footer
+      pdf_font_size: Font size
+      pdf_page_size: Page size
+      pdf_add_page_breaks: Page breaks
+      time_zone: Time zone
   deliveries:
     add_stock_change:
       how_many_units: 'How many units (%{unit}) to deliver? Stock article name: %{name}.'
@@ -1043,6 +1137,7 @@ en:
       no_ordergroup: no ordergroup
   navigation:
     admin:
+      config: Configuration
       home: Overview
       ordergroups: Ordergroups
       title: Administration
diff --git a/config/locales/nl.yml b/config/locales/nl.yml
index f3f38c0d..1c998c6c 100644
--- a/config/locales/nl.yml
+++ b/config/locales/nl.yml
@@ -213,6 +213,22 @@ nl:
         title: Administratie
         type: Type
         username: Gebruikersnaam
+    configs:
+      list:
+        title: Configuratielijst
+        key: Sleutel
+        value: Inhoud
+      show:
+        title: Configuratie
+        submit: Opslaan
+      tab_layout:
+        pdf_title: PDF documenten
+      tabs:
+        title: Configuratie
+      tab_messages:
+        emails_title: Emailinstellingen
+      update:
+        notice: Configuratie opgeslagen.
     confirm: Wil je %{name} daadwerkelijk wissen?
     ordergroups:
       destroy:
@@ -402,6 +418,80 @@ nl:
       file_label: Graag een compatibel bestand uitkiezen
       submit: Bestand uploaden
       title: Artikelen uploaden voor %{supplier}
+  config:
+    tabs:
+      foodcoop: Foodcoop
+      payment: Financiën
+      language: Taal
+      messages: Berichten
+      tasks: Taken
+      layout: Layout
+      others: Overig
+      list: Lijst
+    hints:
+      name: De naam van de foodcoop.
+      contact:
+        email: Algemeen contactadres, zowel voor op de website als in formulieren.
+        street: Adres, meestal is dit het aflever- en ophaaladres.
+      custom_css: De layout van deze site kan gewijzigd worden door hier cascading stylesheets (CSS) in te voeren. Laat het leeg voor de standaardstijl.
+      homepage: Website van de foodcoop.
+      help_url: Documentatie website.
+      applepear_url: Website waar het appelpunten systeem wordt uitgelegd.
+      ignore_browser_locale: Negeer de taal van de computer wanneer iemand nog geen taal gekozen heeft.
+      price_markup: Percentage dat bovenop het brutobedrag wordt gedaan voor foodcoop leden.
+      tax_default: Standaard BTW percentage voor nieuwe artikelen.
+      stop_ordering_under: Leden kunnen slechts bestellen als ze dit aantal appelpunten hebben of meer.
+      minimum_balance: Leden kunnen slechts bestellen wanneer hun tegoed groter of gelijk is aan dit bedrag.
+      use_apple_points: Wanneer het appelpunten systeem is geactiveerd, kunnen leden slechts bestellen wanneer ze meewerken aan taken.
+      use_nick: Toon bijnamen in plaats van volledige naam. Controleer dat iedereen een bijnaam heeft wanneer je dit aanzet.
+      use_messages: Laat leden met elkaar communiceren door middel van berichten binnen Foodsoft.
+      use_wiki: "Gebruik wiki pagina's."
+      email_sender: "Emails worden verzonden vanaf dit emailadres. Om te voorkomen dat emails als spam worden tegengehouden, is het te adviseren het adres van de webserver op te nemen in het SPF record van het email domein."
+      email_from: "Emails zullen lijken verzonden te zijn vanaf dit email adres. Laat het veld leeg om het contactadres van de foodcoop te gebruiken."
+      email_replyto: Vul dit in als je antwoord op mails van Foodsoft wilt ontvangen op een ander adres dan het bovenstaande.
+      mailing_list: Mailing-lijst adres om te gebruiken in plaats van het berichtensysteem voor emails naar alle leden.
+      mailing_list_subscribe: Emailadres waar leden zich kunnen aanmelden voor de mailing-lijst.
+      page_footer: 'Wordt op iedere pagina getoond. Vul "blank" in om de voettekst helemaal weg te halen.'
+      pdf_font_size: Basis tekstgrootte voor PDF bestanden (standaard 12).
+      pdf_page_size: 'Paginaformaat voor PDF bestanden, meestal "A4" of "letter".'
+      pdf_add_page_breaks:
+        order_by_articles: Ieder artikel op een nieuwe pagina.
+        order_by_groups: Ieder huishouden op een nieuwe pagina.
+      tolerance_is_costly: "Bestel zoveel artikelen als mogelijk in de tolerantie (in plaats van net genoeg om de laatste doos te vullen). Dit zorgt er ook voor dat de tolerantie in de prijs van open ledenbestellingen wordt meegenomen."
+    keys:
+      name: Naam
+      contact:
+        street: Straat
+        zip_code: Postcode
+        city: Stad
+        country: Land
+        email: Email
+        phone: Telefoon
+      custom_css: Aangepaste CSS
+      homepage: Homepage
+      help_url: Documentatie URL
+      applepear_url: Appelsysteem uitleg URL
+      default_locale: Standaardtaal
+      ignore_browser_locale: Browsertaal negeren
+      price_markup: Foodcoop marge
+      tax_default: Standaard BTW
+      tolerance_is_costly: Tolerantie is duur
+      stop_ordering_under: Minimum appelpunten
+      use_apple_points: Appelpunten
+      minimum_balance: Minimum tegoed
+      use_nick: Bijnamen gebruiken
+      use_messages: Berichten gebruiken
+      use_wiki: Wiki gebruiken
+      email_sender: Sender adres
+      email_from: From adres
+      email_replyto: Reply-to adres
+      mailing_list: Mailing-lijst
+      mailing_list_subscribe: Mailing-lijst aanmelden
+      page_footer: Voettkest
+      pdf_font_size: Tekstgrootte
+      pdf_page_size: Paginaformaat
+      pdf_add_page_breaks: "Nieuwe pagina's"
+      time_zone: Tijdzone
   deliveries:
     add_stock_change:
       how_many_units: 'Hoeveel eenheden (%{unit}) leveren? Voorraadartikel: %{name}.'
@@ -1023,6 +1113,7 @@ nl:
       no_ordergroup: geen huishouden
   navigation:
     admin:
+      config: Instellingen
       home: Overzicht
       ordergroups: Huishoudens
       title: Administratie
diff --git a/config/navigation.rb b/config/navigation.rb
index de4e6b24..dd5d1f17 100644
--- a/config/navigation.rb
+++ b/config/navigation.rb
@@ -45,6 +45,7 @@ SimpleNavigation::Configuration.run do |navigation|
       subnav.item :users, I18n.t('navigation.admin.users'), admin_users_path
       subnav.item :ordergroups, I18n.t('navigation.admin.ordergroups'), admin_ordergroups_path
       subnav.item :workgroups, I18n.t('navigation.admin.workgroups'), admin_workgroups_path
+      subnav.item :config, I18n.t('navigation.admin.config'), admin_config_path
     end
 
     engines.each { |e| e.navigation(primary, self) }
diff --git a/config/routes.rb b/config/routes.rb
index 42921214..aa87ae25 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -181,6 +181,10 @@ Foodsoft::Application.routes.draw do
       resources :ordergroups do
         get :memberships, :on => :member
       end
+
+      resource :config, :only => [:show, :update] do
+        get :list
+      end
     end
 
     ############## Feedback
diff --git a/db/schema.rb b/db/schema.rb
index 5b3cd143..c8e9c41e 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -66,18 +66,6 @@ ActiveRecord::Schema.define(version: 20140521142651) do
 
   add_index "assignments", ["user_id", "task_id"], name: "index_assignments_on_user_id_and_task_id", unique: true, using: :btree
 
-  create_table "configurable_settings", force: true do |t|
-    t.integer "configurable_id"
-    t.string  "configurable_type"
-    t.integer "targetable_id"
-    t.string  "targetable_type"
-    t.string  "name",              default: "", null: false
-    t.string  "value_type"
-    t.text    "value"
-  end
-
-  add_index "configurable_settings", ["name"], name: "index_configurable_settings_on_name", using: :btree
-
   create_table "deliveries", force: true do |t|
     t.integer  "supplier_id"
     t.date     "delivered_on"
diff --git a/lib/foodsoft_config.rb b/lib/foodsoft_config.rb
index 69644705..1975f2c7 100644
--- a/lib/foodsoft_config.rb
+++ b/lib/foodsoft_config.rb
@@ -1,13 +1,66 @@
+# Foodcoop-specific configuration.
+#
+# This is loaded from +config/app_config.yml+, which contains a root
+# key for each environment (plus an optional +defaults+ key). When using
+# the multicoops feature (+multicoops+ is set to +true+ for the environment),
+# each foodcoop has its own key.
+#
+# In addition to the configuration file, values can be overridden in the database
+# using {RailsSettings::CachedSettings} as +foodcoop.<foodcoop_scope>.**+.
+#
+# Some values may not be set in the database (e.g. the database connection to
+# sharedlists, or +default_scope+), these are defined as children of the
+# +protected+ key. The default contains a sensible list, but you can modify
+# that. Here's an almost minimal example:
+#
+#     default:
+#       default_scope: f
+#       host: order.foodstuff.test      # hostname for urls in emails
+#
+#       name: Fairy Foodstuff           # the name of our foodcoop
+#       contact:
+#         # ...
+#         email: fairy@foodstuff.test   # general contact email address
+#
+#       price_markup: 6                 # foodcoop margin
+#
+#       protected:
+#         shared_lists: false           # allow database connection override
+#         use_messages: true            # foodcoops can't disable the use of messages
+#
+# When you like to whitelist protected attributes, define an entry +all: true+,
+# then you can whitelist specific attributes setting them to +false+.
+#
 class FoodsoftConfig
-  mattr_accessor :scope, :config
+
+  # @!attribute scope
+  #   Returns the current foodcoop scope for the multicoops feature, otherwise
+  #   the value of the foodcoop configuration key +default_scope+ is used.
+  #   @return [String] The current foodcoop scope.
+  mattr_accessor :scope
+  # @!attribute config
+  #   Returns a {ActiveSupport::HashWithIndifferentAccess Hash} with the current
+  #   scope's configuration from the configuration file. Note that this does not
+  #   include values that were changed in the database.
+  #   @return [ActiveSupport::HashWithIndifferentAccess] Current configuration from configuration file.
+  mattr_accessor :config
+
+  # Configuration file location.
+  #   Taken from environment variable +FOODSOFT_APP_CONFIG+,
+  #   or else +config/app_config.yml+.
   APP_CONFIG_FILE = ENV['FOODSOFT_APP_CONFIG'] || 'config/app_config.yml'
   # Rails.logger isn't ready yet - and we don't want to litter rspec invocation with this msg
   puts "-> Loading app configuration from #{APP_CONFIG_FILE}" unless defined? RSpec
-  APP_CONFIG = YAML.load(File.read(File.expand_path(APP_CONFIG_FILE, Rails.root)))
+  # Loaded configuration
+  APP_CONFIG = ActiveSupport::HashWithIndifferentAccess.new(
+    YAML.load(File.read(File.expand_path(APP_CONFIG_FILE, Rails.root)))
+  )
 
   class << self
 
     def init
+      # Gather program-default configuration
+      self.default_config = get_default_config
       # Load initial config from development or production
       set_config Rails.env
       # Overwrite scope to have a better namescope than 'production'
@@ -16,17 +69,67 @@ class FoodsoftConfig
       set_missing
     end
 
-    # Set config and database connection for specific foodcoop
-    # Only needed in multi coop mode
+    # Set config and database connection for specific foodcoop.
+    #
+    # Only needed in multi coop mode.
+    # @param foodcoop [String, Symbol] Foodcoop to select.
     def select_foodcoop(foodcoop)
       set_config foodcoop
       setup_database
     end
 
-    # Provides a nice accessor for config values
-    # FoodsoftConfig[:name] # => 'FC Test'
+    # Return configuration value for the currently selected foodcoop.
+    #
+    # First tries to read configuration from the database (cached),
+    # then from the configuration files.
+    #
+    #     FoodsoftConfig[:name] # => 'FC Test'
+    #
+    # To avoid errors when the database is not yet setup (when loading
+    # the initial database schema), cached settings are only being read
+    # when the settings table exists.
+    #
+    # @param key [String, Symbol]
+    # @return [Object] Value of the key.
     def [](key)
-      config[key]
+      if RailsSettings::CachedSettings.table_exists? and allowed_key?(key)
+        value = RailsSettings::CachedSettings["foodcoop.#{self.scope}.#{key}"]
+        value = config[key] if value.nil?
+        value
+      else
+        config[key]
+      end
+    end
+
+    # Store configuration in the database.
+    #
+    # If value is equal to what's defined in the configuration file, remove key from the database.
+    # @param key [String, Symbol] Key
+    # @param value [Object] Value
+    # @return [Boolean] Whether storing succeeded (fails when key is not allowed to be set in database).
+    def []=(key, value)
+      return false unless allowed_key?(key)
+      value = normalize_value value
+      # then update database
+      if config[key] == value or (config[key].nil? and value == false)
+        # delete (ok if it was already deleted)
+        begin
+          RailsSettings::CachedSettings.destroy "foodcoop.#{self.scope}.#{key}"
+        rescue RailsSettings::Settings::SettingNotFound
+        end
+      else
+        # or store
+        RailsSettings::CachedSettings["foodcoop.#{self.scope}.#{key}"] = value
+      end
+      return true
+    end
+
+    # @return [Array<String>] Configuration keys that are set (either in +app_config.yml+ or database).
+    def keys
+      keys = RailsSettings::CachedSettings.get_all("foodcoop.#{self.scope}.").try(:keys) || []
+      keys.map! {|k| k.gsub /^foodcoop\.#{self.scope}\./, ''}
+      keys += config.keys
+      keys.map(&:to_s).uniq
     end
 
     # Loop through each foodcoop and executes the given block after setup config and database
@@ -41,11 +144,60 @@ class FoodsoftConfig
       end
     end
 
+    # @return [Boolean] Whether this key may be set in the database
+    def allowed_key?(key)
+      # fast check for keys without nesting
+      if self.config[:protected].include? key
+        return !self.config[:protected][key]
+      else
+        return !self.config[:protected][:all]
+      end
+      # @todo allow to check nested keys as well
+    end
+
+    # @return [Hash] Full configuration.
+    def to_hash
+      Hash[keys.map {|k| [k, self[k]]} ]
+    end
+
+    protected
+
+    # @!attribute default_config
+    #   Returns the program-default foodcoop configuration.
+    #
+    #   Plugins (engines in Rails terms) can easily add to the default
+    #   configuration by defining a method +default_foodsoft_config+ in
+    #   their engine and modify the {Hash} passed.
+    #
+    #   When modifying this, please make sure to use default values that
+    #   match old behaviour. For example, when the wiki was made optional
+    #   and turned into a plugin, the configuration item +use_wiki+ was
+    #   introduced with a default value of +true+ (set in the wiki plugin):
+    #
+    #      module FoodsoftWiki
+    #         class Engine < ::Rails::Engine
+    #           def default_foodsoft_config(cfg)
+    #             cfg[:use_wiki] = true # keep backward compatibility
+    #           end
+    #         end
+    #       end
+    #
+    #   @return [Hash] Default configuration values
+    mattr_accessor :default_config
+
+    # Reload original configuration file, e.g. in between tests.
+    # @param filename [String] Override configuration file
+    def reload!(filename = APP_CONFIG_FILE)
+      APP_CONFIG.clear.merge! YAML.load(File.read(File.expand_path(filename, Rails.root)))
+      init
+    end
+
+
     private
 
     def set_config(foodcoop)
       raise "No config for this environment (#{foodcoop}) available!" if APP_CONFIG[foodcoop].nil?
-      self.config = APP_CONFIG[foodcoop].symbolize_keys
+      self.config = APP_CONFIG[foodcoop]
       self.scope = foodcoop
       set_missing
     end
@@ -56,21 +208,58 @@ class FoodsoftConfig
       ActiveRecord::Base.establish_connection(database_config)
     end
 
-    # When new options are introduced, put backward-compatible defaults here, so that
-    # configuration files that haven't been updated, still work as they did.
+    # Completes foodcoop configuration with program defaults.
+    # @see #foodsoft_config
     def set_missing
-      config.replace({
-        use_nick: true,
-        use_apple_points: true,
-        foodsoft_url: 'https://github.com/foodcoops/foodsoft'
-      }.merge(config))
+      config.replace(default_config.deep_merge(config))
     end
 
-    # reload original configuration file, e.g. in between tests
-    def reload!(filename = APP_CONFIG_FILE)
-      APP_CONFIG.clear.merge! YAML.load(File.read(File.expand_path(filename, Rails.root)))
-      init
+    # Returns program-default configuration.
+    #   When new options are introduced, put backward-compatible defaults here, so that
+    #   configuration files that haven't been updated, still work as they did. This also
+    #   makes sure that the configuration editor picks up the defaults.
+    # @return [Hash] Program-default foodcoop configuration.
+    # @see #default_config
+    # @see #set_missing
+    def get_default_config
+      cfg = {
+        use_nick: true,
+        use_apple_points: true,
+        # English is the default language, and this makes it show up as default.
+        default_locale: 'en',
+        currency_unit: '€',
+        currency_space: true,
+        foodsoft_url: 'https://github.com/foodcoops/foodsoft',
+        # The following keys cannot, by default, be set by foodcoops themselves.
+        protected: {
+          multi_coop_install: true,
+          default_scope: true,
+          notification: true,
+          shared_lists: true,
+          protected: true,
+          database: true
+        }
+      }
+      # allow engines to easily add to this
+      engines = Rails::Engine::Railties.engines.select { |e| e.respond_to?(:default_foodsoft_config) }
+      engines.each { |e| e.default_foodsoft_config(cfg) }
+      cfg
     end
 
+    # Normalize value recursively (which can be entered as strings, but we want to store it properly)
+    def normalize_value(value)
+      value = value.map(&:normalize_value) if value.is_a? Array
+      value = Hash[ value.to_a.map{|a| [a[0], normalize_value(a[1])]} ] if value.is_a? Hash
+      case value
+        when 'true' then true
+        when 'false' then false
+        when /^[-+0-9]+$/ then value.to_i
+        when /^[-+0-9.]+([eE][-+0-9]+)?$/ then value.to_f
+        when '' then nil
+        else value
+      end
+    end
+
+
   end
 end
diff --git a/lib/foodsoft_messages/app/overrides/admin/configs/_tab_messages/add_config.html.haml.deface b/lib/foodsoft_messages/app/overrides/admin/configs/_tab_messages/add_config.html.haml.deface
new file mode 100644
index 00000000..41af5566
--- /dev/null
+++ b/lib/foodsoft_messages/app/overrides/admin/configs/_tab_messages/add_config.html.haml.deface
@@ -0,0 +1,4 @@
+/ insert_bottom ':root:last-child'
+= config_use_heading form, :use_messages, label: 'Messages' do
+  = config_input form, :mailing_list, as: :string, input_html: {class: 'input-xlarge'}
+  = config_input form, :mailing_list_subscribe, as: :string, input_html: {class: 'input-xlarge'}
diff --git a/lib/foodsoft_messages/lib/foodsoft_messages.rb b/lib/foodsoft_messages/lib/foodsoft_messages.rb
index 9cc7c4a6..08619383 100644
--- a/lib/foodsoft_messages/lib/foodsoft_messages.rb
+++ b/lib/foodsoft_messages/lib/foodsoft_messages.rb
@@ -4,8 +4,8 @@ require "deface"
 
 module FoodsoftMessages
   # Return whether messages are used or not.
-  # Enabled by default since it used to be part of the foodsoft core.
+  # Enabled by default in {FoodsoftConfig} since it used to be part of the foodsoft core.
   def self.enabled?
-    FoodsoftConfig[:use_messages] != false
+    FoodsoftConfig[:use_messages]
   end
 end
diff --git a/lib/foodsoft_messages/lib/foodsoft_messages/engine.rb b/lib/foodsoft_messages/lib/foodsoft_messages/engine.rb
index 38b8b4ff..81b063bb 100644
--- a/lib/foodsoft_messages/lib/foodsoft_messages/engine.rb
+++ b/lib/foodsoft_messages/lib/foodsoft_messages/engine.rb
@@ -11,5 +11,9 @@ module FoodsoftMessages
         sub_nav.items.insert(i, sub_nav.items.delete_at(-1))
       end
     end
+
+    def default_foodsoft_config(cfg)
+      cfg[:use_messages] = true
+    end
   end
 end
diff --git a/lib/foodsoft_wiki/lib/foodsoft_wiki.rb b/lib/foodsoft_wiki/lib/foodsoft_wiki.rb
index dc726e81..0d2aa77f 100644
--- a/lib/foodsoft_wiki/lib/foodsoft_wiki.rb
+++ b/lib/foodsoft_wiki/lib/foodsoft_wiki.rb
@@ -6,8 +6,8 @@ require 'foodsoft_wiki/engine'
 
 module FoodsoftWiki
   # Return whether the wiki is used or not.
-  # Enabled by default since it used to be part of the foodsoft core.
+  # Enabled by default in {FoodsoftConfig} since it used to be part of the foodsoft core.
   def self.enabled?
-    FoodsoftConfig[:use_wiki] != false
+    FoodsoftConfig[:use_wiki]
   end
 end
diff --git a/lib/foodsoft_wiki/lib/foodsoft_wiki/engine.rb b/lib/foodsoft_wiki/lib/foodsoft_wiki/engine.rb
index b56e617a..d74db4d2 100644
--- a/lib/foodsoft_wiki/lib/foodsoft_wiki/engine.rb
+++ b/lib/foodsoft_wiki/lib/foodsoft_wiki/engine.rb
@@ -11,5 +11,9 @@ module FoodsoftWiki
         primary.items.insert(i+1, primary.items.delete_at(-1))
       end
     end
+
+    def default_foodsoft_config(cfg)
+      cfg[:use_wiki] = true
+    end
   end
 end
diff --git a/spec/app_config.yml b/spec/app_config.yml
index f9d0ed81..5da8aa3c 100644
--- a/spec/app_config.yml
+++ b/spec/app_config.yml
@@ -13,6 +13,9 @@ default: &defaults
   contact:
     email: fc@minimal.test
 
+  # required by configuration form (but otherwise not)
+  homepage: http://www.minimal.test/
+
   # true by default to keep compat with older installations, but test with false here
   use_nick: false
 
diff --git a/spec/integration/config_spec.rb b/spec/integration/config_spec.rb
new file mode 100644
index 00000000..ee7b2956
--- /dev/null
+++ b/spec/integration/config_spec.rb
@@ -0,0 +1,46 @@
+require_relative '../spec_helper'
+
+describe 'admin/configs', type: :feature do
+  let(:name) { Faker::Lorem.words(rand(2..4)).join(' ') }
+
+  describe type: :feature, js: true do
+    let(:admin) { create :admin }
+    before { login admin }
+
+    it 'has initial value' do
+      FoodsoftConfig[:name] = name
+      visit admin_config_path
+      within('form.config') do
+        expect(find_field('config_name').value).to eq name
+      end
+    end
+
+    it 'can modify a value' do
+      visit admin_config_path
+      fill_in 'config_name', with: name
+      within('form.config') do
+        find('input[type="submit"]').click
+        expect(find_field('config_name').value).to eq name
+      end
+      expect(FoodsoftConfig[:name]).to eq name
+    end
+
+    it 'keeps config the same without changes' do
+      orig_values = get_full_config
+      visit admin_config_path
+      within('form.config') do
+        find('input[type="submit"]').click
+        expect(find_field('config_name').value).to eq FoodsoftConfig[:name]
+      end
+      expect(get_full_config).to eq orig_values
+    end
+
+    def get_full_config
+      cfg = FoodsoftConfig.to_hash.deep_dup
+      cfg.each {|k,v| v.reject! {|k,v| v.blank?} if v.is_a? Hash}
+      cfg.reject! {|k,v| v.blank?}
+      cfg
+    end
+
+  end
+end
diff --git a/spec/lib/foodsoft_config_spec.rb b/spec/lib/foodsoft_config_spec.rb
new file mode 100644
index 00000000..20ab28f5
--- /dev/null
+++ b/spec/lib/foodsoft_config_spec.rb
@@ -0,0 +1,99 @@
+require_relative '../spec_helper'
+
+describe FoodsoftConfig do
+  let(:name) { Faker::Lorem.words(rand(2..4)).join(' ') }
+  let(:other_name) { Faker::Lorem.words(rand(2..4)).join(' ') }
+
+  it 'returns a default value' do
+    expect(FoodsoftConfig[:protected][:database]).to be true
+  end
+
+  it 'returns an empty default value' do
+    expect(FoodsoftConfig[:protected][:LIUhniuyGNKUQTWfbiOQIWYexngo78hqexul]).to be nil
+  end
+
+  it 'returns a configuration value' do
+    FoodsoftConfig.config[:name] = name
+    expect(FoodsoftConfig[:name]).to eq name
+  end
+
+  it 'can set a configuration value' do
+    FoodsoftConfig[:name] = name
+    expect(FoodsoftConfig[:name]).to eq name
+  end
+
+  it 'can override a configuration value' do
+    FoodsoftConfig.config[:name] = name
+    FoodsoftConfig[:name] = other_name
+    expect(FoodsoftConfig[:name]).to eq other_name
+  end
+
+  it 'cannot set a default protected value' do
+    old = FoodsoftConfig[:database]
+    FoodsoftConfig[:database] = name
+    expect(FoodsoftConfig.config[:database]).to eq old
+  end
+
+  it 'can unprotect a default protected value' do
+    FoodsoftConfig.config[:protected][:database] = false
+    old = FoodsoftConfig[:database]
+    FoodsoftConfig[:database] = name
+    expect(FoodsoftConfig[:database]).to eq name
+  end
+
+  describe 'can protect a value', type: :feature do
+    before do
+      FoodsoftConfig.config[:protected][:name] = true
+    end
+
+    it 'can protect a value' do
+      old_name = FoodsoftConfig[:name]
+      FoodsoftConfig[:name] = name
+      expect(FoodsoftConfig[:name]).to eq old_name
+    end
+
+    it 'and unprotect it again' do
+      old_name = FoodsoftConfig[:name]
+      FoodsoftConfig.config[:protected][:name] = false
+      FoodsoftConfig[:name] = name
+      expect(FoodsoftConfig[:name]).to eq name
+    end
+  end
+
+  it 'can protect all values' do
+    old_name = FoodsoftConfig[:name]
+    FoodsoftConfig.config[:protected][:all] = true
+    FoodsoftConfig[:name] = name
+    expect(FoodsoftConfig[:name]).to eq old_name
+  end
+
+  it 'can whitelist a value' do
+    FoodsoftConfig.config[:protected][:all] = true
+    FoodsoftConfig.config[:protected][:name] = false
+    FoodsoftConfig[:name] = name
+    expect(FoodsoftConfig[:name]).to eq name
+  end
+
+  describe 'has indifferent access', type: :feature do
+    it 'with symbol' do
+      FoodsoftConfig[:name] = name
+      expect(FoodsoftConfig[:name]).to eq FoodsoftConfig['name']
+    end
+
+    it 'with string' do
+      FoodsoftConfig['name'] = name
+      expect(FoodsoftConfig['name']).to eq FoodsoftConfig[:name]
+    end
+
+    it 'with nested symbol' do
+      FoodsoftConfig[:protected][:database] = true
+      expect(FoodsoftConfig[:protected]['database']).to eq FoodsoftConfig[:protected][:database]
+    end
+
+    it 'with nested string' do
+      FoodsoftConfig[:protected]['database'] = true
+      expect(FoodsoftConfig[:protected]['database']).to eq FoodsoftConfig[:protected][:database]
+    end
+  end
+
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 739df522..3b7389c0 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -35,6 +35,8 @@ RSpec.configure do |config|
   end
   config.after(:each) do
     DatabaseCleaner.clean
+    # Need to clear cache for RailsSettings::CachedSettings
+    Rails.cache.clear
   end
 
   # reload foodsoft configuration, so that tests can use FoodsoftConfig.config[:foo]=x