Winemaker Stéphane Derenoncourt, 53, is the antithesis of what most people consider Bordeaux to be. He's an outsider who has earned his way up the ranks. He takes a casual t-shirt-and-jeans approach to work in a world of often buttoned-up châteaus.

But today, Derenoncourt is fully embedded in Bordeaux's machinery, a long way from his days helping to create La Mondotte. With an extensive range of consulting clients on both the Right and Left Banks, he shares his perspective on the young wines from the 2015 vintage. And Wine Spectator senior editor James Molesworth shares his tasting note on the winemaker's own 2015 Domaine de l'A.