text: When following the ONrails “Rolling on Ruby with Rails” tutorial part1 I
  (already) encountered the first complication.
  After doing those basic actions to set up the basic site, the tutorial
  tells me to overwrite the “list” method included in the “scaffold
  :recipe” method which we find in the recipe controller with this code:
  def list
  @recipes = recipe.find_all
  end
  Now this code doesn’t work. When trying to view my site I keep getting
  an error message which says that the variable recipe is undefined.
  With the (average) knowledge I own concerning programming I suppose
  “@recipes” should define the variable, which doesn’t happen here.
  I searched half rubyonrails.org looking for another way of defining that
  variable, but it’s alway “@recipe”. I followed every step in that
  tutorial closely, does anyone know what’s wrong? I use Ruby version
  182-14.
  thx in advance