The minimum number of months non-vintage Champagne ages sur lie is 10 months.
All Champagne must spend at least 15 months in the bottle before release. Of this, 12 months must be sur lie, (on the lees). The minimum aging periods required by law for Champagne wines are much longer than for other sparkling wines. European wine regulations, for example, specify a minimum of only 90 days for effervescent wines in general.