Ondarre produces Tempranillo-based wines from Rioja, Spain's most celebrated red wine region. The winery's flagship reserves—Orden De Ondarre and Mayor De Ondarre—showcase the depth and structure that define classic Rioja Reserva. Both are built on Tempranillo, the region's signature grape, known for its balance of dark fruit, acidity, and aging potential. Ondarre also works with Mazuelo, Rioja's traditional secondary variety, in the Varietal de Ondarre. The wines have been assessed by major critics including Wine Spectator, Wine Enthusiast, Decanter, and Falstaff. Rioja's continental climate and traditional winemaking methods create wines with the complexity and refinement that appeal to serious collectors and those seeking authentic expressions of the region.