The things that make you feel astringent when you drink red wine are tannins. Tannins, also called ellagic acid, have an astringent effect on the mucous membranes of the mouth. This substance is an antioxidant and plays a role in a wine's ability to age. Ellagic tannins are a type of hydrolyzed tannins, the main source of tannins from oak barrels, grape skins, seeds in the tannins are mainly condensed tannins.

The role of tannins in wine is as follows:

1. Color protection: it combines with pigments to make the color of red wine more stable.

2. Increase the stability of the wine body.

3. Increases the mouthfeel and body mellowness, one of the main pillars of wine architecture. 4. Antioxidant. It has health effects.

Wine with insufficient tannin content generally cannot be aged. Tannins, more will also precipitate, play a role in the wine to increase the layering!

Q: What is the flavor of tannins

Bitter, astringent, different tannins will have different bitter and astringent, really pure tannins are not bitter, bitter is some impurities, mainly gallic acid and its ester