Château Calon-Ségur is an estate located in the commune of Saint-Estèphe on the left bank of the Gironde River in Bordeaux, which was rated as a third growth in the 1855 Classification of the Medoc and Graves. Calon-Ségur's vineyards are planted on clay and gravel soil, giving the finished wines power and finesse. While Cabernet Sauvignon is dominant in the wines, Merlot and Cabernet Franc are planted as well, providing blending opportunities. The grand vin is aged in new oak, fined with egg whites and produced in relatively small quantities – 80,000 bottles – every year.