Because the air inside the bottle push out the wooden cork.
the cork will pop out of the bottle as pressure from the heated air pushes the cork
You have to let it finish fermenting
If there were no bottle caps (as we currently know them), there would be covers or plugs of some type. For example: cork or wax or plastic plugs. Someone would invent something to protect the contents of a bottle.
The cork would fly off and wine would spritz out everywhere.
Bottle is to cork - as jar is to LID.
It's a cork.
Cork for bottles is made from cork trees.
The cork
If there was a small amount of dry ice in the bottle, then yes, it would be able to pop a cork
A cork?
push in the cork and then tip the bottle upside-down to get the coin out
The cork over the bottle's neck is going too be pushed by how much air is in the bottle.
A CORK stopper is a plug for a bottle made of cork