100% Tempranillo from three proprietary vineyards: La Veguilla, Jararte, and Valgrande located around the towns of San Vicente de la Sonsierra and Labastida. Soils are calcareous clay with gravel. Careful hand harvesting of perfectly mature clusters with good sanitary conditions and additional selection made in the winery using a sorting table. The wine undergoes 21 days maceration with two pump-overs daily during the first 11 days and a light pump-over every day after that. Temperature controlled fermentation. Aged 14 months in 2-3 years old Bordelaise barrels of American and French oak with racking every four months. Bottled unfiltered.

Founded by Guillermo Eguren, a self-made "bodeguero", coming from a family tradition of vine growers. Today, the fourth generation of the Eguren family, Marcos Eguren, is the winemaker and director of the winery. Sierra Cantabria has come to the forefront of Spanish wineries in the last 15 years. This is from the extreme care that they give to their vineyards, located in the best terrain of Rioja, the savoir-faire of Marcos Eguren, and his price-conscious policies. Vineyards are located in San Vicente de la Sonsierra, Rioja Alta. One of the most famous towns in Rioja, known for the quality of its grapes. The grapes are sourced on 267 acres (108 ha), from 1,440-1,740 ft. above sea level (480-580 m), spread among the towns of San Vicente de la Sonsierra, Labastida, and Laguardia. The proportions of grapes are 91% Tempranillo, 3% Malvasia, and 6% Viura. 75% of the production comes from their own vineyards, the rest they buy from local growers. They have been doing ecologically conscious agriculture in their own vineyards for the last 12 years. Average production 0.5 t/acre (hectare is 5,000 kg). The soil is composed of Clay-lime, the best soil of Rioja. The climate is Continental, with the influence of winds from the Atlantic, but protected from more severe weather by the Sierra Cantabria Mountains.