Dei produces wines from Montepulciano in Toscana, a region celebrated for structured reds built on Sangiovese and its local variants. The winery's Madonna della Querce Vino Nobile di Montepulciano, made from Prugnolo Gentile, represents the classical expression of the appellation—a wine that has drawn assessment from Wine Spectator, Wine Enthusiast, Wine Advocate, Falstaff, and Decanter. The Vino Nobile di Montepulciano Riserva Bossona, also Sangiovese-based, offers the deeper complexity that extended aging in the DOCG's traditional framework can achieve. Sancta Catharina, a blend of Shiraz, Cabernet Sauvignon, Petit Verdot, and Sangiovese, demonstrates the winery's approach to combining international varieties with the regional backbone. Dei's portfolio reflects the tension and balance that define central Tuscan winemaking: respect for appellation identity alongside experimentation with complementary grapes.