Crus: 50% Petite Champagne, 30 % Fins Bois, 20% Grande Champagne
The XO Carafe blend is crafted when new eaux- de-vie are selected.
The eaux-de-vie first spend 10 to 14 months in new oak casks (heavy toast). Next come 9 years of maturing in red (aged) casks.
The step-by-step ageing process gradually brings the alcohol content from 55°, when the spirit first goes into barrels, down to 40°. There are four ageing steps, with a tasting session at each phase (55°, 47°, 43°, 40°).