Sheep tail oil is an oil made from the fat part of sheep tail, which is usually boiled by heating. Although sheep tail oil does not contain muscle fiber, it is rich in fat, which can release a strong fragrance during cooking and is often used to add flavor to food. In some places, such as Inner Mongolia, sheep tail oil is regarded as an extremely precious part of sheep and is a good food. Because of its special flavor and unique use, sheep tail oil is widely used in some cooking and becomes a unique ingredient.