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Cylinder pressure

The carbonic acid dissolved in the bottle leads to a high bottle pressure in sparkling wines. The pressure is regulated by law. Sparkling wines are under a minimum pressure of 3 bar. Sparkling wines include all sparkling wines, but also Spanish Cava and a few Italian Prosecco. Also Champagne are sparkling wines. However, the second fermentation process, which takes place exclusively in the bottle, the carbonic acid fermentation (bottle fermentation, Méthode Champenoise), leads to a pressure of 5 to 6 bar. This means that champagnes are under almost double the bottle pressure. Just how high a pressure of 5 to 6 bar is can be illustrated by comparing it to a car tire. An average car tire runs with 2 bar.

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