The cuvee stays on lees an average of 15 months and when the cuvee is considered to have aged on lees sufficiently, the yeast is removed and the wine sweetened. The blended base cuvee has sugar and yeast added and is then bottled. The bottles are laid on their sides in bins, inside temperature controlled cellars to undergo a secondary fermentation in the bottle. The fermentation lasts six to eight weeks, during which time the sugar is converted to alcohol and CO2. The CO2 pressurises the bottle and gives Lindauer her bubbles.