1. Look at the wine: from the top of the glass, clear wine is good wine, while turbid wine is inferior wine. Shake the glass and judge by the flow speed of red wine. If it is slow and sticky, it is classified as good wine.

2, smell the wine: put your nose close to the mouth of the cup, the smell of the wine is fruity or tender wine, and the compound fragrance is Tibetan wine.

3. Taste: Take a sip of wine and spin it in your mouth. If the tannin content in wine is high, it will feel very dry. Because tannins have astringent effect, this shows that the wine is not fully mature. It is best to achieve a balance of sour-sweet-bitter-salty taste.

Extended data:

Most of the sugar in wine is left after fermentation. If fermentation is artificially terminated before it is completely carried out, some sugar will remain without being converted by yeast. Some winemakers also add grape juice or concentrated grape juice to wine to increase the sugar content of wine.

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