Champagne is a kind of wine. Traditional champagne is made by adding sugar and yeast to dry white wine after main fermentation, bottling it and fermenting it again in the bottle. There are many kinds of wines, and the classification methods are different. Generally, they are classified according to brewing method, alcohol content, source of raw materials, total sugar content, flavor type, color and koji, etc. Let me give you a brief introduction. (1) According to the brewing methods, it can be divided into: brewing wine (fermented wine), distilled wine and mixed wine. Like yellow rice wine, wine, fruit wine, beer, etc., all belong to brewing wine, and folk fermented alcoholic drinks such as koumiss, milk wine and mash are also listed here. This kind of wine is characterized by low alcohol content, generally between 3%- 18%, and rich in nutrients, which is not suitable for long-term storage. China liquor, vodka, whisky, brandy, gold and rum are known as the six major distilled liquor series in the world. These liquors are characterized by high alcohol content, generally above 30%, but they contain almost no nutrients necessary for human body. Because they are distilled and condensed raw liquors, they must be aged for a long time, ranging from 2-3 years to 8- 15 years. For example, there are some distilled koumiss and milk wine in northern China, but the alcohol content is low, and less than 30% of the mixed wines in China are divided into dew wine and blended wine, among which the famous dew wines are bamboo leaf green, snake wine, musk wine and ginseng wine. Cocktails are the most typical mixed wine. (2) According to the classification of alcohol content, it can be divided into low alcohol, moderate alcohol and high alcohol. The alcohol content of low-alcohol wine is below 20%, and fermented wine and some mixed wines are included. The alcohol content of moderate wine is 20%-40%, and most mixed wines are in this range. The alcohol content of high-alcohol liquor is above 40%, and all kinds of distilled liquor belong to this category, and some mixed wines are also included. (3) According to the classification of raw materials, it can be divided into: white wine, yellow wine and fruit wine. White wine is brewed with grain (sorghum, corn, rice, bran, etc.); Yellow rice wine is generally made of rice, corn and millet. Needless to say, fruit wine is made of various fruits, and the most typical one is wine. (4) According to the total sugar content, this is a classification method of fermented wines such as wine, yellow wine and fruit wine. Usually, the total sugar content is calculated by glucose, which can be divided into dry type, semi-dry type, semi-sweet type, sweetness and strong sweetness. (5) According to the classification of aroma types, China liquor appraisal is classified by aroma types. There are four basic flavors: Maoxiang (Maotai-flavor): Luzhou-flavor represented by Moutai (Luzhou-flavor): Fenxiang represented by LU ZHOU LAO JIAO CO.,LTD and Wuliangye (Fenxiang-flavor): Mixiang represented by Guilin Sanhua Liquor (6) According to color classification, beer is often divided into three categories: 1) light beer 2) dark beer 3) dark beer wine. ) White wine 2) Red wine 3) Pink wine (7) According to koji types, mainly for China liquor and yellow wine, white wine can be divided into: 1) Daqu wine 2) Xiaoqu wine 3) bran koji wine 4) mixed koji wine 5) Other saccharifying agent yellow wine can be divided into: 1) wheat koji yellow wine 2) red koji wine.