Ten Jin of grapes can make about 6- 10 Jin of wine. The amount of wine that grapes can make is determined by the sugar content of grapes, and grapes with high sugar content will make more wine. If ten kilograms of grapes are fermented with sugar, the alcohol content can be increased to about 15 degrees. After complete fermentation, the skin residue is removed, and after squeezing and filtering, the wine can generally be made to about 8- 10 kilograms. If you don't add sugar for fermentation, the sugar content of grapes is average, which can generally be 6-8 kg.

The composition of red wine is quite complicated. It is a fruit wine brewed by natural fermentation. It contains the most grape juice, accounting for more than 80%, followed by alcohol naturally fermented by sugar in grapes, generally at10% ~13%, and the remaining substances exceed 1000, and there are more than 300 more important ones. Other important components of red wine, such as wine acid, fruit, minerals and tannic acid. Although the proportion of these substances is not high, they are the decisive factors for the quality of wine. Red wines with high quality and delicious taste are because they can present a balance of organizational structure, which makes people have endless enjoyment in taste.