Guy Charlemagne's 2014 Grand Cru Blanc de Blancs is a vintage Champagne from Le Mesnil‑sur‑Oger. Made entirely from old‑vine Chardonnay (Vieilles Vignes) and released as an Extra Brut, the wine involves partial barrel vinification and a low dosage. It is presented as a vertical, mineral expression of the Côte des Blancs terroir.