Grosbois produces Cabernet Franc from Touraine, in the Middle Loire Valley. The winery's portfolio centers on Chinon, the region's signature expression of the variety. Its three flagship wines—Vieilles Vigne Chinon, Clôture Chinon, and Clos du Noyer Chinon—have been assessed by Wine Advocate, Wine Enthusiast, Wine Spectator, and Decanter. Cabernet Franc in this terroir typically shows red fruit, mineral tension, and structural elegance; Grosbois's releases reflect these regional characteristics. The Vieilles Vigne bottling leads the lineup in critical evaluation, followed by Clôture and Clos du Noyer. Loire Valley Cabernet Franc remains a benchmark for the variety's ability to balance ripeness with acidity and complexity.