Opta produces wines from the Beiras region of Central Portugal, where granite soils and Atlantic influence shape distinctive reds. The winery's portfolio centers on native Portuguese varieties: Alfrocheiro, Tinta Roriz, and Touriga Nacional—grapes that thrive in this terroir's cool, continental climate. The Grande Reserva, a blend of all three, represents the house's approach to complexity and structure. Single-varietal expressions follow: Alfrocheiro Imperatriz showcases the variety's dark fruit and mineral character, while the Touriga Nacional captures the grape's signature tannin and depth. These wines have been assessed by Wine Enthusiast, Wine Advocate, and Wine Spectator.