Vinegar is a fermented sour liquid condiment. It is made from starchy grains ( sorghum , yellow rice , glutinous rice , indica rice , etc.) as the main material, and bran and rice hulls as auxiliary materials. Vinegar is one of the main condiments in cooking. It is mainly sour and aromatic. It has a wide range of uses and is the main raw material for sweet and sour taste. It can remove fishy and degrease, increase the umami taste and fragrance, reduce the loss of vitamin C during the heating process of food, and can also dissolve the calcium in the cooking ingredients to facilitate the body’s absorption. More well-known varieties of vinegar Zhenjiang, Jiangsu and Shanxi old mature vinegar , etc., commonly used in slip dishes, side dishes and smell the heavier dishes.