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Basic knowledge of boutique coffee what is tannin

Published: 2026-04-09 Author: World Gafei

Last Updated: 2026/04/09, Tannin, one of the main chemical components of coffee beans, accounts for about 7% of the total chemical composition of coffee beans. After extraction, tannic acid will turn into a yellowish powder and easily dissolve in water. Once heated, it will decompose to produce pyrosylic acid, making the taste of coffee worse. Because of this, a cup of brewed coffee will lose its taste and taste if it is not drunk immediately.

Tannin is one of the main chemical components of coffee beans, accounting for about 7% of the total chemical composition of coffee beans.

After extraction, tannin will turn into a pale yellow powder and easily dissolve in water. Once heated, it will decompose to produce pyrochloric acid, which will make coffee taste worse.

Because of this, if a cup of brewed coffee is not drunk immediately, it will make the taste and taste lose, and therefore there is a saying that "coffee should be drunk while it is hot."

It is generally believed that the life span of a cup of coffee is 10 minutes. If you want to, you can try, every minute, the same cup of coffee taste is the same, and 10 minutes later, the coffee will taste different from when it was brewed.

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