User blog comment:Loka Fåghel/Legit question/@comment-32295718-20190722200758

''“Ketchup, also known as catsup, ketsup, red sauce, and tomato sauce, is a sauce used as a condiment. Originally, recipes used egg whites, mushrooms, oysters, mussels, or walnuts, among other ingredients, but now the unmodified term usually refers to tomato ketchup.“''

- Wikipedia