A Lentil Stew is a combination of solid food ingredients that have been cooked in liquid and served in the resultant gravy. Since lentils have to cook / simmer for between 15-45 minutes (depending on type) they are an ideal ingredient for stews. Other Ingredients in a Lentil Stew can include any combination of vegetables (such as carrots, potatoes, beans, peppers and tomatoes, etc.), meat, especially tougher meats suitable for slow-cooking, such as beef. Poultry, sausages, and seafood are also used. While water can be used as the stew-cooking liquid, wine, stock, and beer are also common. Seasoning and flavourings may also be added. Stews are typically cooked at a relatively low temperature (simmered, not boiled), allowing flavors to mingle. Stewing is suitable for the least tender cuts of meat that become tender and juicy with the slow moist heat method. This makes it popular in low-cost cooking. Cuts having a certain amount of marbling and gelatinous connective tissue give moist, juicy stews, while lean meat may easily become dry. Stews may be thickened by reduction.