You probably have seen people “swirl” wine around in their glass. Is that just an arcane ritual? Maybe, but there is also has a very good reason for doing it.
Swirling releases the smells of the wine, which is very important to enjoying the full experience of drinking it. You can swirl the wine around, stick your nose in it, even suck it through your teeth. All these things “bring out” the wine.
I like to swirl, then sniff, then sip. Sometimes I manage not to swirl it onto the tablecloth, too.
Incidentally, you don’t need to taste a wine to tell if it is off. The nose is enough.
[Information courtesy of: Wine Trail]