Cocktail sauce

Cocktail sauce, also known as seafood sauce, is one of several types of cold or room temperature sauces often served as part of a dish referred to as a seafood cocktail or as a condiment with other seafoods. The sauce, and the dish for which it is named, are often credited to British celebrity chef Fanny Cradock, but seafood cocktails predate her 1967 recipe by some years . Seafood cocktails originated in the 19th century in the United States, usually made with oyster or shrimp. Seafood with spiced, cold sauces was a well-established part of the 20th century culinary repertoire. While cocktail sauce is most associated with the prawn cocktail, it can be served with any shellfish. In the United States and Canada it generally consists of, at a minimum, ketchup or chili sauce mixed with prepared horseradish. Lemon juice, Worcestershire sauce and Tabasco sauce are common additives, often all three.

Source: Wikipedia