By Malvina Demaj Last Updated: Mar 17, 2026

Tartaric Acid

(taa-ta-ruhk a-suhd)
DEFINITION

Tartaric Acid

Tartaric acid is the primary natural acid in grapes and wine, essential for providing a refreshing, sharp and crisp taste. Unlike other wine acids, it remains stable during fermentation, determining the wine’s pH and protecting it against bacteria. Often, tartaric acid combines with potassium to form “wine diamonds”, which contribute to long term aging. Winemakers often add it to low acid, warm climate wines to increase acidity and improve balance, color and flavor.

Did you know? Grapes contain a higher concentration of tartaric acid than almost any other fruit or vegetable, with only tamarinds being higher.

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