1. A really good red wine should not only smell fragrant and pleasant, but also taste mellow and full. Generally, after wine enters the mouth, it will bring some "bitter" and "astringent" tastes, which are all caused by tannins in the wine.

2. Tannin combines with protein in saliva, resulting in a chemical reaction, which reduces saliva secretion, resulting in a tightening feeling, which makes people feel dry. In the newly brewed red, there are more tannins, and the bitter feeling will be stronger.

3. After time, tannins in fermented wine will touch and fuse with other substances, making red wine delicate and silky, and the bitter taste will fade, so the really delicious red wine tastes smooth and balanced, and the taste of red wine is full in the mouth and has a long aftertaste.

How to taste wine:

Good red wine also needs people who can taste it. Good red wine needs to be tasted slowly, and wine tasting also needs to be studied. First, smell the aroma and smell the aroma concentration of red wine. If the aroma is rich, it means that the red wine is fragrant; On the contrary, if the aroma is bland, it is like red wine, and then take a sip of red wine and extend it from the tip of your tongue to your throat. The delicious red wine is silky and slippery.