Delphine Brulez, winemaker at Champagne Louise Brison, hails from the Aube, a southwestern enclave in Champagne that has always had a touch of a rebellious streak. Closer in geography, soil, and spirit to Burgundy than to Reims, many winemakers here are leading the grower-producer revolution that is focusing on terroir—that is, single-vineyard, single-vintage, even single-varietal Champagne—in a region where blending has defined the style for centuries. The Aube is, at the very least, making us rethink what we know about Champagne.