Is crème de tartre e336 vegan?

Crème de tartre is the French term for cream of tartar, which is designated by the European food additive code E336 and chemically known as potassium bitartrate. This ingredient is an acidic salt derived as a natural byproduct of the winemaking process. During the fermentation of grape juice, tartaric acid binds with potassium, forming a crystalline sediment on the inside walls of storage barrels. Manufacturers collect these deposits, dissolve and filter them to remove impurities, and grind the resulting crystals into a fine white powder.

Food producers use E336 primarily as a leavening activator, acid regulator, and volume stabilizer. It commonly appears on labels for baking powders, breads, cookies, meringues, icings, candies, and gelatin-free soft sweets. Crème de tartre E336 is classified as vegan because it originates entirely from grapes, which are of plant origin. The production and purification methods rely on mineral and botanical processes without the use of animal products or animal-derived processing aids.