Sauternes (wine) Château d'Yquem, can be very expensive, due largely to the very high cost of production. Barsac lies within Sauternes, and is entitled to use either name. Somewhat similar but less expensive and typically less-distinguished wines are produced in the neighboring regions of Monbazillac, Cérons, Loupiac and Cadillac. In the United States, there is a semi-generic label for sweet white dessert wines known as "sauterne" without the "s" at the end and uncapitalized. As in most of France, viticulture is believed to have been introduced into Aquitania by the Romans. The earliest evidence of sweet wine production, however, dates only to
Chablis wine notes. Of all the Grand Cru vineyards Les Clos is the largest in area at . Hugh Johnson describes the wines from this Grand Cru as having the best ageing potential among Chablis and developing Sauternes-like aromas after some bottle age. The Union des Grand Crus de Chablis (UGCC) was launched in March 2000, as a syndicate restricted to Grand Cru proprietors, with mission "to defend and promote the quality of Chablis Grand Cru wines". Members are bound to abide by a charter which covers wine making and sales. Grand Cru makers must submit their wines to a tasting committee