In terms of pressure management, which pair is critical for Champagne packaging?

• A. Cork and cap
• B. Cork and muselet
• C. Muselet and label
• D. Bottle color and cork

Answer: (B)

Pressure management in Champagne packaging hinges on a seal that can endure high CO2 pressure and a way to keep that seal in place during handling. The cork is the main seal, forced into the bottle neck under several atmospheres of pressure and deforming to fill the gap so gas can’t escape. But the cork alone can be pushed out or loosened, so a muselet—the wire cage around the cork—provides the mechanical restraint that holds the cork in place and prevents premature release. Together, cork and muselet ensure the bottle safely contains the carbonation until open. The other elements listed don’t contribute to sealing or retaining pressure, which is why cork and muselet are the essential pair.