300 vines in the Barranco Oscuro plots are planted at 1290 meters on schist and clay soils, with natural cultivation—no herbicides, pesticides, or synthetic fertilizers. Compost is applied every two years to retain water, and minimal sulfur is used in June.

The grapes are hand-harvested at optimal ripeness, with careful selection. Spontaneous fermentation occurs with native yeasts in stainless steel, without temperature control. Malolactic fermentation happens naturally during aging in barrels. No sulfur or additives are used, and the wine is unclarified, lightly filtered at bottling, and may contain natural sediments.