tomato paste or ketchup

Tomato paste is a concentrated condiment produced by cooking tomatoes for hours, straining out seeds and skins, and reducing the pulp to a thick, deeply concentrated form. It originated in the Mediterranean region and has become a global staple, particularly in Italian, Spanish, and Middle Eastern cuisines. The paste ranges in color from deep red to dark brown depending on cooking time and tomato variety. Ketchup, by contrast, is a sweetened and spiced tomato condiment that emerged in 19th-century America as an industrialized adaptation of Asian fermented sauces. While tomato paste is a pure concentration of cooked tomatoes, ketchup contains added sugar, vinegar, salt, and spices (typically including onion, garlic, and cloves), resulting in a sweeter, more complex flavor profile and pourable consistency. Both are shelf-stable products designed for long-term storage.

Tomato paste serves as a foundational ingredient in sauces, stews, soups, and braises, lending depth, umami, and concentrated tomato flavor with minimal liquid. A small amount—typically 1-2 tablespoons—enriches a dish significantly. It is essential in Mediterranean cooking (Italian pasta sauces, Spanish sofrito, Turkish salças) and Middle Eastern cuisine. Ketchup functions primarily as a condiment for hamburgers, hot dogs, french fries, and grilled meats, though it also appears in glazes, meatloaf, and bean dishes. Tomato paste requires cooking into a dish, whereas ketchup is typically applied after cooking or used directly as a finishing condiment.