A chili dog is a popular American fast food item that consists of a cooked hot dog served in a sliced bun, topped with a generous portion of chili. The chili is typically made from ground meat, beans, tomatoes, and various spices, giving it a rich and savory flavor. Chili dogs can be customized with additional toppings such as cheese, onions, or jalapeños to enhance their taste. They are often enjoyed at sporting events, barbecues, and casual gatherings, making them a favorite comfort food for many.