If the wine is an expensive wine, it will probably be ruined by a defective cork.
An inexpensive wine will not be helped by a defective cork, but the damage is less noticeable. You will need to use a better corkscrew to remove the remaining part of the cork. You may have to strain the wine to get the bits out.
Many taste tests have shown that there is no difference observed in the quality of wine with synthetic corks vs. natural corks. The plastic corks are quite inexpensive and do not break apart. Most wine lovers have an aversion to screwtops, but the fact is that screwtops are as effective at preserving wine as corks.
Cork
Push the cork into the bottle
depends on the dimensions of the bottle...
The main benefit of a CO2 wine opener is the ease and speed with which you can open a bottle of wine. The opener injects a small amount of gas into the bottle with a needle through the cork which pushes the cork quickly out of the bottle.
Aluminum foil
No.
If the cork dries in the wine bottle then the wine is spoilt and generally turns into vinagar. This is why wine and champagne should never be stored standing upright if it has a cork in it.
Cork
Cork
It keeps the wine up against the cork, which keeps the cork from drying out. When the cork dries out it will shrink and either let air into the bottle (ruining the wine), or fall into the bottle (also ruining the wine).
Wine corks are typically made from cork. A wine bottle's cork could be one single piece or several pieces stacked one on top of another. The cork is used to seal the wine bottle.
Push the cork into the bottle
depends on the dimensions of the bottle...
You pop off the cork on a wine bottle before you can drink it.
The wine goes bad.
The purpose of a wine stopper is to cork the remaining wine in a bottle before putting it on a rake or into the refrigerator since using the original cork is sometimes difficult to put back into the bottle.
In fine restaurants, the cork is handed to you after the bottle is open, so that you can smell it, and tell the waiter if it is OK to pour it or not. If the cork smells bad, then it is likely the wine has turned bad as well.