ketchup sauce

Ketchup (also spelled catsup) is a thick, pourable condiment made from tomatoes, vinegar, sugar, and spices, with origins in Chinese fermented fish sauces (ke-tsiap) that were adapted by Western cooks in the 17th and 18th centuries. The modern version became standardized in the 19th century, particularly through American commercial production. The ingredient consists primarily of tomato concentrate or fresh tomatoes reduced with vinegar and sweeteners, seasoned with garlic, onion, and spices such as clove, cinnamon, and allspice. The result is a balanced condiment with sweet, acidic, and umami notes, characterized by a smooth texture and deep red color.

Ketchup functions as a versatile table condiment and cooking ingredient across numerous cuisines. It is most famously paired with fried foods such as french fries, hamburgers, and hot dogs in American and British traditions, but also appears in Asian preparations, particularly in Filipino and Indian cuisines where it serves as a base for gravies and sauces. Beyond table service, ketchup is incorporated into glazes for meats, mixed into meatloaf and burger formulations, and used in baking beans and braised dishes. It pairs well with savory, salty, and fried preparations, and its sweetness balances spicy or acidic components in composed dishes.