Quinta Vale D. Maria produces wines from the Douro, Portugal's most prestigious red wine region. The winery draws on the Duriense subregion's steep, schist-terraced vineyards and the indigenous varieties that define the area: Touriga Nacional, Tinta Roriz, Tinta Barroca, Touriga Franca, and Tinto Cão. The Colheita Porto, a field blend of these five grapes, represents the winery's approach to the region's fortified tradition. Vinha do Rio Douro Tinto, built on Touriga Nacional, and Curriculum Vitae, anchored in Tinta Roriz, showcase the winery's focus on single-varietal expression from the Douro's distinctive terroir. These wines have been assessed by Wine Enthusiast, Wine Advocate, Decanter, Falstaff, and Wine Spectator.