Clos du Caillou produces wines from Châteauneuf-du-Pape, the Southern Rhône's most prestigious appellation. The winery's portfolio centers on Grenache, the region's signature variety, known for its ripe fruit character and ability to express the warm, stony terroir of the area. La Réserve Châteauneuf-du-Pape, a pure Grenache expression, stands as the winery's flagship. Les Quartz Châteauneuf-du-Pape blends Syrah and Grenache, a combination that brings structure and depth to the appellation's characteristic richness. Châteauneuf-du-Pape Les Safres offers another Grenache-based interpretation. These wines have been assessed by Wine Advocate, Wine Spectator, Decanter, Wine Enthusiast, and Falstaff.