A salad is a dish consisting of small pieces of food, which may be mixed with a sauce or salad dressing. They are typically served cold. Salads can incorporate a variety of foods including vegetables, fruits, cheese, cooked meat, eggs, grains and nuts. Most salads are served cold, although some, such as south German potato salad, are served warm. Some consider the warmth of a dish a factor that excludes it from the salad category calling the warm mixture a casserole, a sandwich topping or more specifically, name it for the ingredients which comprise it.