Cheese soup is a type of soup prepared using cheese as a primary ingredient, along with milk, broth and/or stock to form its basis. Various additional ingredients are used in its preparation, and various types and styles of cheese soup exist. It is a part of some cuisines in the world, such as American, Colombian, Mexican, Swiss, French, and Tibetan cuisines. Mass-produced cheese soups may be prepared with the addition of food additives to preserve them and enhance flavor. A list of cheese soups is included in this article.