Castaño operates in Yecla, Murcia's inland wine region where continental climate and high elevation shape powerful, structured reds. The winery focuses on Monastrell, the region's signature variety, alongside Garnacha Tintorera and Cabernet Sauvignon. Casa Cisca Monastrell, the flagship, demonstrates the depth Monastrell achieves in these conditions—a wine that has drawn attention from Wine Advocate, Falstaff, Wine Spectator, Wine Enthusiast, and Decanter. Solanera Viñas Viejas blends Garnacha Tintorera, Cabernet Sauvignon, and Monastrell from old vines, while Sierra Alta Old Vines Monastrell underscores the winery's commitment to age-worthy expressions of its core varietal. These wines reflect Yecla's terroir: mineral, concentrated, built for cellaring.