I sometimes read on Chowhound, or other boards, or am told by a wine shop clerk, that a particular wine (usually a "big" one - a bordeaux, a brunello, etc.) needs to be opened a while before drinking - to "breathe" for an hour or so, etc.
How do people normally do that ? Do you simply open the bottle and let it sit out ? I would think the small opening at the top of the bottle would not be very helpful. Are they suggesting you decant ? Do you pour your glass an hour early ? I've never done this before (don't usually buy wines that require it), and am curious.