Moderate drinking is not only harmless to the body, but also beneficial to the body. First of all, we should understand the wine manufacturing process, which is divided into: 1, harvesting 2, peeling 3, juicing 4, clarification 5A, oak barrel fermentation 5B, wine tank fermentation 6A, oak barrel culture 6B, wine tank culture 7, clarification 8 and bottling. If these links do not appear, 1. Grapes should not touch oil, iron and copper during brewing. Too much sugar will affect the taste of wine! If you want to drink liqueur, you can add sugar after fermentation. Will not produce harmful substances to wine or human body!