Narbona operates in Casablanca Valley, Aconcagua's cool maritime region, where Pacific influence shapes wines of precision and structure. The winery focuses on Petit Verdot, Syrah, and blended expressions that reflect the valley's signature balance of ripeness and acidity. Petit Verdot emerges as a flagship varietal here, its dark fruit and firm tannins suited to the region's moderate growing season. The Ensamblaje—a blend of Petit Verdot, Cabernet Sauvignon, Carménère, and Syrah—demonstrates the winery's approach to layering varietals across Casablanca's terroir. A Syrah rounds out the core range, capturing the region's capacity for peppery, mineral-driven expressions. Wine Advocate, Wine Spectator, Wine Enthusiast, Decanter, and Falstaff have all assessed the portfolio.