Ketchup (i/ˈkɛtʃəp/ or i/ˈkɛtʃʌp/), or catsup, is a table sauce. Traditionally, different recipes featured ketchup made of mushrooms, oysters, mussels, walnuts, or other foods, but in modern times the term without modification usually refers to tomato ketchup, often called tomato sauce, or, occasionally, red sauce. It is a sweet and tangy sauce, typically made fromtomatoes, a sweetener, vinegar, and assorted seasonings and spices. Seasonings vary by recipe, but commonly includeonions, allspice, cloves, cinnamon, garlic, and sometimes celery. Heinz tomato ketchup, which contains 23.7g sugar and 3.1g of salt per 100g, is the market leader, with an 82% market share in the UK.
Tomato ketchup is often used as a condiment with various dishes that are usually served hot, including chips/fries,hamburgers, sandwiches, hot dogs, french toast, eggs, and grilled or fried meat. Ketchup is sometimes used as a basis or ingredient for other sauces and dressings. Ketchup is also used as a flavoring for things such as crisps/potato chips, and this variety of crisps/chips is one of the most-popular flavors in Canada. This flavor of potato chip has also been offered in the U.S. as recently as September 2014.