The corks currently in use consist of an agglomerated cork granule on which two cork discs are glued (the one in contact with the wine is called the " mirror ").
The cork must be marked with the name of the Champagne appellation and, if applicable, the year of the vintage.
Once pressed into the bottle's neck, the cork is covered with acap plate, secured by a wiper to hold the cork in place.
While ensuring maximum tightness, the plug does not completely prevent gas exchange.
As with tirage corking, a little oxygen penetrates over time, allowing the wine to continue its evolution.
The bottle is then vigorously shaken (" poignettage "to ensure the homogeneity of the wine and liqueur.
It is finally mirrored, to check its limpidity. mirage "It is then put back into the cellar for a few months before being sold.