In Le Mesnil-sur-Oger, in the Côte des Blancs, right in front of the famous Maison Salon, stands the Domaine Guy Charlemagne, founded in 1892 and handed down from father to son even today, headed by Philippe Charlemagne. The property is spread over 15 hectares in Le Mesnil-sur-Oger, 100% Grand Cru, plus other small plots in the Côte de Sézanne, with 87% of the vineyards consisting of Chardonnay, the king variety of this region, and 13% of Pinot Noir. The average age of the vineyards is 42 years.