Division 6 The duration of the process of making quality sparkling wines bearing a protected designation of origin, including ageing in the undertaking where they are made and reckoned from the start of the fermentation process designed to make the wines sparkling, may not be less than:
United Kingdom
- (a)
six months where the fermentation process designed to make the wines sparkling takes place in closed tanks;
- (b)
nine months where the fermentation process designed to make the wines sparkling takes place in the bottles.