Demazet produces wines from the Rhône Valley, where the region's warm continental climate and diverse terroirs shape distinctive expressions of southern French varieties. The winery's portfolio centers on Grenache-based blends, a hallmark of Côtes-du-Rhône production. Château Quilex Gadagne Côtes-du-Rhône-Villages, a blend of Grenache and Shiraz/Syrah, represents the upper tier of the range. The Domaine des Mascarons Côtes-du-Rhône combines Mourvèdre, Grenache, and Shiraz/Syrah into a more approachable expression. Both wines have been assessed by Wine Enthusiast and Wine Advocate, anchoring Demazet within the critical conversation around southern Rhône production. The winery's focus remains on the classic varietals and blending traditions of the region.