Château Cos d’Estournel is a Second Growth in Saint-Estèphe, classified in 1855. Its vineyard covers roughly 91 hectares along the southern edge of the appellation, beside the stream that separates Saint-Estèphe from Pauillac. Deep gravel soils over a subsoil of flint, limestone and clay have eroded over centuries into steep ridges that drain the vineyard perfectly. The estate is planted mainly to Cabernet Sauvignon and Merlot, with smaller plantings of Cabernet Franc and Petit Verdot, and the proportions in each vintage vary with the character of the year. Cos d’Estournel also produces a white from Sauvignon Blanc and Sémillon, as well as Les Pagodes de Cos, its second wine. Nearby Château Cos Labory, a Fifth Growth, shares the Saint-Estèphe terroir and offers a more classic, approachable style, while G d’Estournel brings the house’s style to the wider Médoc appellation.