The 2020 Chablis Grand Cru Les Preuses wafts from the glass with aromas of oyster shell, citrus oil, crisp green apple, white currants and freshly baked bread, framed by a deft touch of reduction. Medium to full-bodied, ample and satiny, it's taut and incisive, with a layered core of fruit, racy acids and a long, intensely mineral finish. It's worth a special effort to seek out.