Firriato operates across Terre Siciliane in Southern Italy, drawing on the region's volcanic soils and Mediterranean climate. The winery focuses on indigenous Sicilian varieties, particularly Nerello Mascalese from Etna's slopes and white grapes including Catarratto Bianco and Carricante. The Signum Aetnae Etna Rosso Riserva, made from Nerello Mascalese, represents the winery's work with this elegant, mineral-driven red. The Gaudensius Pas Dosé, also Nerello Mascalese-based, demonstrates the variety's versatility in sparkling form. The Etna Bianco blends Catarratto Bianco and Carricante to capture the crisp, complex character of white wines from this volcanic terroir. These wines have been assessed by Wine Enthusiast, Decanter, Wine Spectator, Wine Advocate, and Falstaff.