The estate wine from Hacienda Monasterio has at various times been called their Crianza or Cosecha despite the fact that it technically could be called a Reserva. The Del Rio family and Peter Sisseck agree however that their Reserva should be the most age-worthy wine they producer on a regular basis so they rely on vines planted on the chalkiest limestone on the property. The blend is mostly Tinto Fino with up to 20% Cabernet Sauvignon resulting in a wine with very fine but firm tannins in its youth.