The grapes are organically grown in high-altitude vineyards in the northernmost part of Central Castile, where the continental climate enjoys sunny days and cool nights. This diurnal temperature difference produces grapes with intense fruit and excellent varietal definition while retaining freshness. The vineyards are sustainably managed as part of an integrated ecosystem and studded with century-old oak trees. Low annual rainfall results in low disease pressure, allowing the vines to grow without fungicides. Fertilisers have never been used; only organic manure is applied, and a low, superficial tilling manages weed control. Rainwater is collected in a small reservoir and is used for drip irrigation in the case of extreme drought.