Tritium produces wines from Rioja, Spain's most celebrated red wine region. The winery works primarily with Tempranillo, the backbone of Rioja's traditional blends, alongside Garnacha, Graciano, and Mazuelo—varieties that bring structure, aromatics, and aging potential to the region's wines. El Largo Tinto, a blend of Tempranillo, Garnacha, Graciano, and Mazuelo, represents the winery's approach to classic Rioja composition. El Largo Graciano, a varietal expression of Graciano alone, showcases the mineral and spice-driven character that this grape brings to the region. A straightforward Tempranillo rounds out the core range. Wine Advocate and Wine Spectator have rated Tritium's releases.