Question

Why the cork cap blows out?

Answer 1

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Corks pop out because of bottling wine too early and it is continuing to ferment in the bottle. As the yeast consumes the sugar still in the wine, it produces both alcohol and carbon dioxide (CO2) gas. In your carboy, the CO2 escapes through the airlock as bubbles.

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Answer 2

Answer:

Corks pop out because of bottling wine too early and it is continuing to ferment in the bottle. As the yeast consumes the sugar still in the wine, it produces both alcohol and carbon dioxide (CO2) gas. In your carboy, the CO2 escapes through the airlock as bubbles.