ARGOL

is crude Cream of Tartar (which see). It is held in solution in the juice of grapes but it is not soluble in alcoholic fluids, so the formation of alcohol during the fermentation of wine results in its precipitation. In wines bottled before they are fully ripe, the argol is precipitated on the side of the bottle in a sort of crust, thus forming what is called "crusted wine." The imported product comes chiefly from France and Italy.