The vineyard of Chateau Cos d'Estournel now covers 91 hectares. On this terroir with meager peaks and on the southern slopes, Cabernet Sauvignon (60% of the vineyard) find their soils of choice. On the eastern slopes and on the coasts where the limestone basement of Saint-Estèphe is exposed, the Merlots (40% of the vineyard). Only wines from vineyards over twenty years old will bear the name of Chateau Cos d'Estournel. Density from 8 to 10,000 feet per hectare. Each winemaker has the personal responsibility of 45,000 vines, which he takes care of every year. These farming methods are essentially manual. The harvest is of course also manual and it is handmade that the grapes, collected in special crates, will be carefully sorted.

At Chateau Cos d'Estournel, vinification adapts to the character of the harvest, to favor the expression of the terroir and this thanks to a new cellar. Precise grape sorting and pure gravity pumping using 4 lift vats as well as precise control of fermentation temperatures favor the selection of the softest tannins and the preservation of the fruit. A blend of Semillon and Sauvignon, this wine expresses all the potential of the Saint-Estèphe terroir in a white wine.