depends on the classification of the Chablis wine.
classification is specified on the label, underneath
the name of the wine.
starts with "Appellation Chablis..."
Petit Chablis Controlée: drink now, should
be drunk young
Chablis Controlée: 2 to 5 years
Chablis Premier Cru Controlée: 3 to 7 years
Chablis Grand Cru Controlée: 5 to 12 years
a Grand Cru is the best Chablis available
more about Chablis
your question here