amelioration [uh-MEEL-yuh-RAY-shuhn]
A catchall term for various methods of improving a wine, some of which are illegal in commercial winemaking. These methods include adding sugar, water, and/or acid to the grape juice or wine to correct deficiencies. Most countries have regulations pertaining to these practices with regard to commercial winemaking.
The New Wine Lovers Companion, 2nd Edition, by Ron Herbst and Sharon Tyler Herbst. Copyright © (1) 2003, 1995 by Ron Herbst and Sharon Tyler Herbst. Reprinted by arrangement with Barron's Educational Series, Inc.