Wine has been produced on the site of Saint Cosme since Roman times, evident by the ancient Gallo-Roman vats carved into the limestone below the chateau. Louis Barruol took over from his father in 1992, making a dramatic shift to quality, adding a négociant arm to the business in 1997, and converting to biodynamics in 2010. 100% syrah. Robert Parker's Wine Advocate The 2018 Cotes du Rhone is 100% Syrah, sourced from the Gard (on the right bank of the Rhône) and Vinsobres (left bank, higher elevation). Violets, black olives and cassis and blueberry flavors provide terrific varietal expression in a medium to full-bodied package framed by silky tannins.