Tannin

by Staff Writer - C. Barnett | July 02, 2012

Tannin is an organic compound found in red grape skins, seeds, stems and aging oak barrels. During the aging process oak barrels infuse Tannin into the juice. Tannins provide an important flavor dimension in wine. It is astringent when young and such wines are given their longevity and ability to develop by tannins. Tannin is a necessary element in good red wines and in some white wines, but it can be harsh in young wines. The Tannin decreases with bottle aging. Tannins are often described as the element that "dries the mouth" out in red wines. This is sometimes accompanied by a bitter aftertaste, which is referred to as tannic. Tannin provides color, flavor and structure to a wine as well as acting as a preservative.

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