Costers del Siurana produces wines from Priorat, the steep-terraced region of Catalunya known for its slate-rich soils and intense, structured reds. The winery's portfolio centers on Garnacha and Cabernet Sauvignon, often blended with Merlot, Syrah, and Carignan—grapes that thrive in Priorat's demanding terrain. Dolç de L'Obac, a five-grape blend, represents the winery's approach to complexity and depth. Clos de L'Obac, similarly composed, offers a more restrained expression of the same varieties. Miserere, a single-varietal Garnacha, showcases the grape's mineral character and power in this distinctive corner of northeastern Spain. The wines have been assessed by Wine Spectator, Wine Enthusiast, Wine Advocate, and Decanter.