Meat sauce is a savory sauce made primarily from ground meat, often combined with tomatoes, onions, and various seasonings. It is commonly used as a topping for pasta dishes, such as spaghetti, and can also be served with other foods like lasagna or polenta. The sauce is typically simmered to allow the flavors to meld together. There are many variations of meat sauce, with regional differences influencing the ingredients and preparation methods. For example, Bolognese sauce is a famous Italian version that includes ingredients like carrots and celery, while Chili con carne is a spicier American variant that incorporates beans and chili peppers.