A stew is a combination of solid food ingredients that have been cooked in liquid and served in the resultant gravy. Ingredients in a stew can include any combination of vegetables (such as carrots, potatoes, onions, beans, peppers, mushrooms, and tomatoes) and may include meat, especially tougher meats suitable for slow-cooking, such as beef. Poultry, and seafood are also used. While water can be used as the stew-cooking liquid, stock is also common. Seasoning and flavorings may also be added.