Sommariva works in Veneto's Conegliano Valdobbiadene zone, where Glera thrives on steep hillsides and produces Prosecco of precision and depth. The winery's portfolio centers on this single varietal, expressed across distinct styles: the Rive di San Michele Conegliano Valdobbiadene Prosecco captures the complexity of single-vineyard fruit; the Conegliano Valdobbiadene Prosecco Superiore Dry balances richness with restraint; and the Prosecco di Conegliano Spumante Brut offers a leaner, more austere interpretation. Each reflects the terroir of northern Italy's most celebrated sparkling-wine region. Falstaff, Wine Enthusiast, Wine Advocate, and Decanter have all assessed the winery's releases, recognizing the technical consistency across its range.