The estate is planted with 75% Cabernet Sauvignon, 20% Merlot and 5% Cabernet Franc. Cabernet Sauvignon is the noble grape variety par excellence, forming the backbone of Grand-Puy Lacoste's wines. The two other varieties allow the blends to be nuanced in order to accentuate the typicity of the cru. This classic Médoc grape composition is perfectly suited to the gravelly soils of Pauillac, which encourage the slow ripening of Cabernet Sauvignon.