glossary

You can browse our topics using the letters below, or search for a term.

Letter Y:

Yeast: Micro-organisms that convert sugar to alcohol and carbon dioxide in the process known as fermentation. The predominant wine yeast, saccharomyces cerevisiae, is the same micro-organism that ferments beer and makes bread dough rise. Three categories of yeasts are common, including cultured, natural and wild.

Yield: The quantity of grapes or wine produced measured in tons per acre or hectoliters per hectare. Although it is true that overcropped vines with high yields produce less-concentrated grapes, it is not true that lower yields always mean higher quality. Different soils, vineyards and varieties are able to successfully carry different levels of crop.

MEMBER LOGIN

= members only

Keep me logged in      Forgot Password?

Job Opportunities

Passionate about wine? Wine Spectator magazine is looking for an enthusiastic copy editor in the New York office.

Email Newsletters

Sips & Tips | Wine & Healthy Living
Video Theater | Collecting & Auctions
New! Ratings Flash

» View samples
» Or sign up now!
» Manage my newsletter preferences

Classifieds

The marketplace for all your wine needs, including:

Wine Storage | Wine Clubs
Dining & Travel | Wine Auctions
Wine Shops | Wine Accessories