Catsup, also known as ketchup, is a popular condiment made primarily from tomatoes, vinegar, sugar, and various spices. It is commonly used to enhance the flavor of foods like fries, burgers, and hot dogs. The thick, red sauce is enjoyed worldwide and comes in various styles and flavors, including organic and low-sugar options. The history of catsup dates back to the 17th century, originating from a Chinese sauce called kê-tsiap. Over time, it evolved through different cultures, eventually leading to the tomato-based version we know today. Major brands like Heinz and Hunt's have popularized catsup, making it a staple in many households.