It has become common knowledge that you should open a bottle of red wine at least an hour before serving in order to let it breathe. However letting the wine breathe in it’s own bottle isn’t doing any good at all. The wine needs contact with oxygen to improve the flavor and aroma. Very little surface of the wine is exposed to the air while in the bottle.
That’s why true wine connoisseurs will always use a wine decanter, especially for younger red wines. A decanter is a container for wine or other spirits and is often quite decorative. The key to a good decanter is the amount of wine surface that gets exposed to the air. Therefore, a red wine decanter needs to have a wide base. White wine does not need to breathe as much as red so decanters for white wine do not have to be as wide.
When you decant the wine, you should maximize the aeration effect by pouring it slowly against the side of the decanter. This and the traditional swirling in the wineglass will help the oxygen really permeate the wine. An hour is not enough time to breathe for many red wines. Especially young wines tend to be more harsh and can benefit greatly from being decanted...