Made up predomiantely of Tempranillo, with the remainder Graciano, the grapes come from the following five vineyards within Barrio de la Estación of Rioja DOCa: El Estepal, La Loma, Baltracones, La Loma Alta, and Sajazarra. They were planted between 1926 and 1976, grow upon beds of calcareous clay and alluvial, and are farmed organically, uncertified. The grapes are sorted extensively at the winery and undergo indigenous yeast fermentation in 2,000L open-top oak fermenters. The fermentation is spontaneous and without temperature control. The wine is transferred to French oak for malolactic and ageing. The wine ages for 24 months in French oak.