What is the risk if the cork fails to seal under high pressure?

• A. Leakage of sparkling wine
• B. The wine turns to vinegar
• C. The bottle breaks
• D. The labels peel

Answer: (A)

High internal pressure from carbonation is what the bottle is designed to withstand, with the cork acting as the main seal to keep that pressure and the wine inside. If that seal fails under that high pressure, the most direct and likely outcome is that the sparkling wine leaks out around the cork. The gas and liquid escape together because the seal no longer holds, so spillage and loss of wine occur.

Turning to vinegar would require oxygen and acetic bacteria acting on the wine over time, which isn’t the immediate result of a seal failure. The bottle breaking is possible only if pressure remains high and cannot vent, which isn’t the direct consequence of a cork not sealing. Labels peeling is unrelated to the integrity of the seal.