Although it is classified as part of Burgundy, Chablis differs markedly from the rest of that region in terms of its location (almost as close to Sancerre as it is to the Côte D'Or) and the character of the Chardonnay grown and vinified there. Chardonnay from Chablis is famous for its mineral, steely texture, as compared to the broader, rounder Chardonnays from the Côte de Beaune. The clay-limestone soils contain fossilized oyster shells, and appropriately there's no better wine to wash down oysters on the half shell.