Chateau Rieussec was acquired by Domaines Barons de Rothschild (Lafite) in 1984. The estate then included 110 hectares, including 68 hectares of vineyards. To enhance Château Rieussecs potential, stern measures were implemented, including meticulous sorting of seeds and fermenting in barrels, which provides a superior selection for blending fine wines. A new chai was built in 1989 to extend ageing in barrels. The fine wine was produced in far inferior volume in the 1990s due to a more meticulous selection, to the point that none at all was produced in 1993. In 2000, renovations to the ageing chais, construction of a fermenting chai, and the technological modification of the receiving and pressuring rooms also represented strides forward in a quality policy undertaken since 1985. The second wine of Château Rieussec is selected according to the same standards as the first wine. Its constant feature is centred on a fine aromatic structure dominated by citrus aromas. The name, Carmes de Rieussec, relates to the monks of the Carmes de Langon, who were owners of the Rieussec estate in the 18th century. The 2009 vintage of Carmes de Rieussec is 100% Semillon aged for 18 months in oak barrels.