catsup or catchup
Ketchup, or more specifically tomato ketchup, is a thick, tangy condiment made primarily from tomato concentrate. It gets its tang from vinegar, it sweetness from sugar or corn syrup, and its characteristic flavor from salt and spices, like onion powder.
And iconic American condiment, ketchup is used on hamburgers, french fries, and hot dogs, as well as on other sandwiches and even breakfast foods. In addition to being a condiment, ketchup is a key ingredient in many dishes and other sauces.