:library_cooking_book
  Player "This is a book about cooking. It says:"
  Notice "Cooking is the easiest thing in the world. Place an egg on your kitchen and turn on the kitchen pot. The egg will be boiled in a second."
  Notice "Some recipes may take up to four ingredients, so try and be creative!"
  js Managers.Cooking.registerLearntRecipe('boiled-egg');
  + Managers.Cooking.registerLearntRecipe('boiled-fertilized-egg');
  + Managers.Cooking.registerLearntRecipe('boiled-duck-egg');

:library_cake_book
  Player "This is a book about cakes. It says:"
  Notice "Flour is an essential ingredient for baking cakes. You can try to remove the egg, the chocolate, the strawberry and even the milk, but you can't bake a cake without flour."
  js Managers.Cooking.registerLearntRecipe('cake');
  + Managers.Cooking.registerLearntRecipe('cake-2');
  + Managers.Cooking.registerLearntRecipe('cake-3');
  + Managers.Cooking.registerLearntRecipe('cake-4');
