Raineri produces Nebbiolo-based Barolos from Piemonte in northern Italy. The winery's portfolio centers on expressions of this demanding grape, which thrives in the region's limestone-rich hills and continental climate. Castelletto Barolo and Barolo Perno represent the winery's core offerings, showcasing the structure and aging potential that define serious Piedmontese Nebbiolo. The standard Barolo rounds out the range. These wines have been assessed by Decanter, Wine Advocate, Wine Spectator, Wine Enthusiast, and Falstaff.