The grapes are grown in the Sierra de Gata in the northwest in the province of Cáceres. The vineyards are located in high altitude sites of between 700 to 1,100 metres above sea level, where the vines grow typically in small terraced parcels surrounded by pine woods. The diurnal temperature fluctuations at this elevation encourage a long, gradual ripening season for the fruit, producing concentrated flavours from the warm, sunny days coupled with fresh, balancing acidity from the cool nights. The very old bush vines are up to 90 years old and produce low yields of concentrated juice. Planted in decomposed granite soils, these vines produce fine, elegant wines. The vineyards are planted with a number of unusual varieties, most of which are not planted anywhere else in Spain. The vines are hand-harvested as a field blend. Ruefete is an indigenous Spanish early-ripening variety which produces light-bodied wines, while Piñuela is a local synonym for Alvarelhão, producing light, perfumed and delicate wines.
The grapes were destemmed and fermented in concrete vats at controlled temperatures with selected natural yeasts for maximum site expression. The wine was aged in concrete and steel tanks for five months, to allow the purity of fruit and nuances of the vineyard site shine through.