Matsu produces wines from Toro, a region in Castilla y León known for its powerful expressions of Tinta de Toro. The winery's portfolio centers on this indigenous variety, which thrives in the region's continental climate and old-vineyard sites. El Viejo, the flagship, showcases the depth and structure Tinta de Toro can achieve, while El Recio de Domingo and El Picaro De Domingo offer complementary perspectives on the grape's character. These wines have been assessed by Wine Advocate, Wine Enthusiast, Wine Spectator, Decanter, and Falstaff. Toro's reputation rests on the intensity and mineral precision of its reds—wines built on old vines and rigorous viticulture rather than new-oak extraction. Matsu's focus on single-varietal Tinta de Toro reflects the region's commitment to expressing terroir through a grape uniquely suited to its demanding conditions.