Brandy is a kind of high-quality famous wine made by distillation of wine, which is loved by people, and its alcohol content is about 40% to 50%. According to legend, European brandy was first brought by the Crusaders in the 13th century. By the middle of the 17th century, there was already a supply and trade of brandy in European hotels and markets. At that time, Europeans generally believed that it was a kind of medicinal wine that can effectively treat illness, and doctors also believed that this delicious alcoholic beverage can detoxify and degrease. In the brandy national standard GB11856-1997, brandy is divided into four grades, special grade (X.O), excellent grade (V.S.O.P), first grade (V.O) and second grade (Samsung and V.S).