Marchesi di Gresy produces wines from Piemonte in Northern Italy, drawing on the region's classical varieties. The winery's portfolio centers on Nebbiolo-based Barbarescos, including the Camp Gros Martinenga Riserva and Gaiun Martinenga, both expressions of the Martinenga vineyard site. These wines reflect Nebbiolo's characteristic structure and aging potential. The Langhe Virtus Rosso, a blend of Barbera and Cabernet Sauvignon, represents a different approach within the region's framework. Wines from Marchesi di Gresy have been assessed by Wine Enthusiast, Wine Advocate, Wine Spectator, Decanter, and Falstaff.