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. Chateau Rieussec is a blend of 90 to 95% Semillona and 5 to 10% Muscadelle and Sauvignon Blanc. Depending on vintage it is aged between 18 and 26 months in barrel, 55% of which are new. The 2010 is 92% Sémillon, 5% Sauvignon and 3% Muscadelle.