sentences:  The white wines of this area are barrel fermented and aged on their lees.Sauternes is a subregion of Graves known for its intensely sweet, white, dessert wines such as the "Premier Cru Supérieur" classified Château d'Yquem.Wines produced in the region of Barsac, such as "Premiers Crus" Château Climens and Château Coutet are allowed to be labeled either with the commune name or with Sauternes.