We often see people doing research on the vintage and purity of red wine in TV series. In fact, the knowledge of red wine can't be learned in a day and a half. Dry red wine in wine refers to red wine without sugar. In fact, dry red wine refers to red wine in which all the sugar in grape juice has been converted into alcohol after brewing, and the sugar content is little or even less than 4.0g/L. The total sugar content per liter of wine is only 4-12g, which is only a little sweet.

Some wines will have some fragrance, in fact, this is the fruit fragrance produced by grapes. When we pour the wine into the cup and shake it gently, we can smell the wine, which makes people feel relaxed and happy. The color of wine actually comes from the red pigment in grape skin. We should also be careful not to use red wine mixed with synthetic pigment.

Wine is not really sugar-free, and sugar-free here means there is no sugar in it. Even very dry wine contains a small amount of sugar. When there are many kinds of atomic structures in wine grapes, yeast will prefer the series of glucose and fructose, and the sugar in it will stay in the wine without being reacted or transformed, which we ordinary people simply don't realize.

No matter what type of wine is divided from dry type or sweet type, it will not be completely correct and will not be recognized by most people. Because the standards of alcohol are different around the world, there is no standard classification and no clear classification list. Every country is classified according to different methods. For example, in the United States, when the sugar content of wine reaches 10g/L, it is called dry wine, which is different from our country.