The Pueyos follow traditional vinification techniques. After a 3 day cold maceration, fermentation takes place in both cement tanks and stainless steel tanks. Either way, temperatures are closely monitored so the fermentation proceeds at a controlled pace with maximum temperatures reaching 28 degrees Celsius. The "cuvaison" (fermentation + maceration) usually lasts between 15 and 20 days.
Half of the wine is aged in barrels for 18 months following fermentation. Only 25% new barrels and 25% one-year-old barrels are used each year, to avoid overwhelming the fruit. The second part of the cuv�e is aged in cement tanks. The composition of this most prestigious of the wines of this cellar is generally on the order of 60% Merlot, 35% Cabernet Franc and 5% Cabernet Sauvignon.