c. catsup

Catsup, also spelled ketchup, is a condiment prepared from tomatoes, vinegar, sugar, salt, and spices, often including garlic and onion. The term "catsup" derives from the Chinese word "ke-tsiap," a fermented fish sauce, though the modern tomato-based formulation originated in North America during the 19th century. The ingredient is characterized by its thick, smooth consistency achieved through tomato reduction and cooking, with a balanced sweet-sour-savory flavor profile. Commercially produced catsup is typically made by combining tomato paste or puree with vinegar (usually distilled), high fructose corn syrup or sugar, and seasonings, then pasteurized for shelf stability.

Regional and brand variations exist in sweetness levels, spice intensity, and ingredient sourcing, though the American Heinz formulation remains the most widely recognized global standard.

Catsup functions as a universal condiment and flavoring ingredient in contemporary cuisine. It is most commonly served as a table condiment for French fries, burgers, hot dogs, and grilled meats across North American and Western cuisines. In cooking applications, catsup serves as a base for sauces, glazes for ribs and chicken, and an ingredient in Bloody Mary cocktails. It also appears in marinades, barbecue sauces, and as a component in composite dishes such as meatloaf and beans. Beyond Western contexts, catsup is used as a dipping sauce and flavoring element in Asian-fusion and contemporary global cuisines.