Produced with grapes from pre-phylloxera vines thought to be around 140 years old. The vineyard in Fitero is 520 meters above sea level, where the Ebro valley meets the Sierra de Cameros mountains. The soils are primarily rocks and stones but with layers of clay.

Organic practices are followed in the vineyard, where a major project is underway to reintroduce the native vegetation amongst the vines. Grapes are harvested by hand and fermented in 2 year old, 500 litre French Oak barrels. The wine is aged for 1 year in 2 year old 500 Litre and 220 Litre French Oak barrels. The wine is bottled with gentle filtration.

Antonio Sanz had had a long career working in the wine industry when in 1989 he fulfilled his dream of establishing his own winery. He was subsequently joined in the business by his three sons: Iñaki, Xabier and Mikel. In 2007 they began a new project: Viña Zorzal. Their focus was on the traditional Navarran grape varieties, initially Graciano and then Garnacha. They restored abandoned vineyards, planted with very old vines and adapted their winemaking to highlight the heritage and terroir of these special, historical locations.