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 cuvée 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.
