The aromatic Treixadura variety is a local variety of the Ribeiro region. This slow-ripening white variety can be sensitive, so site selection is paramount. The Pazo do Mar Treixadura vineyard is a testament to this: this wine's grapes come from the Torre do Olivar vineyard, a viticultural site that dates back to the Middle Ages. In 2002, the vineyard was replanted with the current Treixadura vines. The vines are planted at a spacing of 1.5 x 2.5 metres on a wide trellise system to avoid too much canopy shade, allowing the grapes to reach good maturity levels. Guyot pruning takes place, compensating for this slightly vigorous variety, keeping yields under control to produce concentrated juice. The vineyard sits at an elevation of 150 metres above sea level on a meander of the River, which has a moderating influence on the vines, as they have been oriented to encourage maximising exposure to the sun. The soil is sedimentary with slate components, which retain the day's warmth and radiate it at night, as Treixadura needs warm soils for optimum quality. The grapes are hand-harvested.