Government-enforced safeguard of the origin and standard of the finest French wines. Wines are placed into four categories, of which Appellation Controlee is the highest quality. For each appellation, the regulations or 'laws' define the precise vineyard area determined according to soil and aspect, the permitted grape varieties, maximum yields and the minimum alcohol level of the wine. They often cover vineyard and cellar practices, too. Annual compulsory tastings ensure that the wine reaches the required standard. Also applied to some spirits and fortified wines such as cognac and armagnac, some vermouth, and the calvados.