E as in ...
      
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Napa Valley wine estate

This beautiful Napa Valley wine estate may bottle its own grapes.

Enology
The science of winemaking, also spelled oenology.
Estate Bottled
A winery may put this term on wine labels only if the bottle’s contents meet several strict criteria related to the grapes’ origin and processing.

Ethyl Alcohol or Ethanol
During fermentation yeast enzymes convert sugar into ethyl alcohol.
Extract
The extract refers to the solid compounds in wine, such as sugars and tannins. A winemaker can increase the extract by extending the time during which the juice is in contact with the grape skins. The longer the contact, the more color and body in the resulting wine. Excessive extract leads to an overly powerful, not so great tasting wine.
      
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