This is a test of commonsense. Complete the next sentence:

How to recork champagne
Try an old cork.
When a champagne cork is removed from the bottle, it mushrooms out and cannot be reinserted back into the bottle. Regular wine bottles and some bottles of hard alcohol come corked with straight corks that can be recycled in champagne bottles to help preserve the leftovers.
To recycle an old cork, insert the old wine or whiskey cork into the champagne bottle in place of the original cork. Champagne bottles are specially designed to withstand the pressure inside the bottle created by the carbon dioxide.