There are many different ways to make hot chili sauce, but here is a basic recipe that you can try at home. Chili peppers are the main ingredient in chili sauce. They are usually blended with other ingredients such as vinegar, tomatoes, onions, garlic, and spices. The exact recipe varies depending on the region where it is made. In general, hot chili sauces are made by simmering chili peppers, vinegar, and other ingredients in a pot over low heat until it reaches the desired consistency.