The production of classic (aged) sparkling wines lasts from 9 months to 13 years. During this time, a magical process of natural secondary fermentation takes place in each bottle. Charmat method is also about secondary fermentation, but, in this case, it takes place not in a bottle but in a large reservoir (tank), with the capacity of 24 thousand bottles. Therefore, such sparkling wines are sometimes called reservoir, or tank wines. It takes from 3 to 6 months to create them. All production processes of SHABO sparkling wines take place under the technological control of oenologists of the Institut Oenologique de Champagne (France).