How do you close a bottle of champagne when the cork does not fit anymore?

You shouldn't try to force a cork back into a champagne bottle if it doesn't fit. It's dangerous and could cause the bottle to explode.

Here are some safer alternatives:

For short-term storage:

* Champagne stopper: These are specifically designed for champagne bottles and create a tight seal. You can find them at most liquor stores or online.

* Wine stopper: A standard wine stopper will also work, though it might not be as airtight.

* Cling wrap: Wrap a layer of cling wrap tightly around the opening of the bottle. This won't create a perfect seal, but it will help to prevent the champagne from going flat too quickly.

For longer storage:

* Transfer to a smaller bottle: If you have a smaller bottle (like a wine bottle), you can pour the remaining champagne into it and seal it with a cork or stopper.

* Freeze the champagne: Freezing the champagne will help to prevent it from going flat. However, it may not be suitable for all types of champagne.

* Enjoy the rest! Sometimes the best solution is to simply enjoy the remaining champagne as soon as possible.

Remember: Always handle champagne bottles with care, and never try to force a cork back into a bottle.