> Is there a difference between ketchup and catsup? > No. (Rest easy, Mr. Burns.) Both are names for a sauce that once was made using a variety of ingredients,

> Is there a difference between ketchup and catsup? > No. (Rest easy, Mr. Burns.) Both are names for a sauce that once was made using a variety of ingredients, including mushrooms and walnuts, and is now primarily made using tomatoes.[0] [0] http://www.slate.com/blogs/browbeat/2013/04/22/ketchup_vs_catsup_differences_none_at_all_video.html http://www.slate.com/blogs/browbeat/2013/04/22/ketchup_vs_ca...