Renato Ratti produces Nebbiolo-based Barolos from Piemonte in Northern Italy. The winery's portfolio centers on single-vineyard expressions from the region's most prestigious sites. Serradenari Barolo, Barolo Rocche dell'Annunziata, and Barolo Conca represent the core range, each capturing distinct terroir within the appellation. These wines have been assessed by Wine Advocate, Wine Spectator, Wine Enthusiast, Decanter, and Falstaff. Barolo demands patience—Nebbiolo's tannins and acidity require years to resolve into the silken, complex wines the region is known for. The winery's focus on single-vineyard Barolos reflects the classical Piemontese approach to expressing site character through this demanding, noble grape.