Temperature-controlled fermentation in stainless steel tanks with indigenous yeast. Malolactic fermentation is also carried out in stainless steel. After its fermentation it goes through a ageing, between wood and bottle, of five years, hence the name of the wine Valbuena 5º. French and American wood, new and used 225 litre barrels, 20,000 litre barrels. A long and complex process for a great wine.