Classic Mixology: Cocktail & Mixed Drink Recipes

tartaric acid

What it is:  Additive
White crystalline diprotic organic acid. It occurs naturally in many plants, particularly grapes, bananas, and tamarinds, and is one of the main acids found in wine. It is added to other foods to give a sour taste, and is used as an antioxidant.
Note:  sub - cream of tartar Further reading:  http://en.wikipedia.org/wiki/Tartaric_acid