Chateau Ducru Beaucaillou is a winery in the Saint Julien appellation of the Bordeaux region of France. The main wine produced at the Estate was classified as one of fifteen Second Growths in the original Bordeaux Wine Official Classification of 1855. Ducru Beaucaillou produces two wines. The "grand vin" called Chateau Ducru Beaucaillou, and a second wine produced since 1995, La Croix de Beaucaillou. The wines are aged for 18 months in 50% to 80% new oak barrels, according to the vintage's richness.