Your nasal receptors, "smell buds", number in the hundreds and work together with the less sensitive taste receptors to give you an overall wine tasting experience. In fact, I tell people that if you can't smell, you can't taste. Here is an easy demonstration:

Close your eyes and have someone give you a glass of fruit juice, such as apple juice, pineapple juice, orange or tomato juice. Without breathing, raise the glass to your mouth and take a sip. Don't let air in or out of your nose or mouth. If you have done this properly (you might have to hold your nose) you should perhaps taste a little sour or sweet, but the kind of juice should be a mystery until you try it again with air coming into your mouth and nose while you sip.

Remember how your parents used to try and get you to eat with

I can remember, too, seeing a blindfolded person with a nose clip eating an onion on television, and thinking it was an apple until his nose clip was removed.

This little demonstration shows that without air you rally can't taste what you are drinking and Ross Valley Winery's slurping lessons pay of in a better wine tasting experience.
About the Author

Paul Kreider, who made his first wine in 1975, is the owner and winemaker of the Ross Valley Winery in San Anselmo, California. Since 1987, with notable success, his small Marin County bonded winery has specialized in transforming modest lots of unique grapes into vineyard-designated wines, each with its own individual character and particular personality. Check our website at www.rossvalleywinery.com.