One often hears descriptions like vanilla, butter, pineapple, pear or lychee for wine. So if wine is made from grapes, where do all these other flavours come from? Why doesn’t wine smell like … well, grapes?
The answer, according to wine education website Winefolly, lies in the aroma compounds in grapes, or stereoisomers, that get released by the alcohol in wine. Alcohol is a gas at room temperature and carries these aroma compounds to your nose. These differ wildly from wine to wine and can influence each other. Add to this the complex terroir of soil, climate, weather and location and it might begin to explain why two Chardonnays, essentially the same grape, can taste so different.
Read more here.


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