Tannin is a bitter, astringent plant compound, often felt as a dry sensation on the tongue. These natural polyphenols are key to the character of wine and tea, and have long been used in tanning animal hides.
Tannin is a bitter, astringent plant compound, often felt as a dry sensation on the tongue. These natural polyphenols are key to the character of wine and tea, and have long been used in tanning animal hides.