Les Grandes Serres operates in the Southern Rhône, where Grenache, Syrah, and Mourvèdre thrive in the region's warm, wind-swept terroir. The winery's portfolio centers on two appellations: Châteauneuf-du-Pape and Gigondas, both known for structured, age-worthy reds. Le Pigna Châteauneuf-du-Pape blends Grenache with Mourvèdre and Syrah, anchoring the range. La Cour des Papes Châteauneuf-du-Pape focuses on Syrah, while the Reserve Gigondas combines all three varieties in a wine built for cellaring. These wines have been assessed by Wine Enthusiast, Wine Advocate, Wine Spectator, Decanter, and Falstaff.