Ketchup is a condiment that is made from a mixture of tomatoes, vinegar, and various spices. It is a thick, sweet, and tangy sauce commonly used as a flavour enhancer for a range of foods, including burgers, fries, sausages, and hot dogs. The origins of ketchup can be traced back to China, where it was originally a fermented fish sauce. Over time, the recipe has evolved, and ketchup as we know it today is largely associated with North American cuisine. It is a popular condiment that is widely available in supermarkets and is a staple in many households. Ketchup also has a variety of uses beyond its culinary applications, such as removing tarnish from brass and silverware.