Bodega Berroja Berroiais sourced from vineyards that are located in the "Urdaibai Biosphere Reserve" in Muxica, within the Txakolina Bizkaiko DO by Spain's Bay of Biscay, at 656 ft elevation. The soils are limestone on the surface with sandy subsoil. The region borders the Atlantic Ocean, making this is one of the wettest regions in Spain. Grapes are harvested, pressed and undergo an extended fermentation and maturation on lees at cool temperatures in stainless steel tanks to retain varietal character.