Feudi di San Gregorio operates in Campania, the ancient wine region of southern Italy where volcanic soils and Mediterranean climate shape distinctive expressions of indigenous grapes. The winery focuses on Greco and Aglianico, varieties central to Campania's identity. Greco di Tufo Lucidelsud, a pure Greco wine, demonstrates the variety's mineral precision and aromatic character. Aglianico appears in two forms: Piano Montevergine Taurasi, a single-varietal expression of structure and depth, and Syriacus, a blend of Aglianico with Shiraz/Syrah that bridges local tradition with international grape varieties. These wines have been assessed by Decanter, Wine Enthusiast, Wine Advocate, Wine Spectator, and Falstaff. The winery's portfolio reflects Campania's volcanic terroir and the region's historical significance as a source of serious, age-worthy reds and whites.