Corton Charlemagne was perhaps the slowest aging Grand Cru you can find in burgundy, I was told that it aged even slower than a Montrachet Grand Cru! Judging from experience, I’m lukewarm with this claim, I’d say it all depends on the winemaker skills.
Bouchard hardly produced Corton Charlemagne, I had the honor to drink it. Was really burned butter on the nose, with matured bouquet thereafter. Palate was quite balanced, almost like a lemon butter style, high in acidity yet rich in matured fruits.”