harsh
A wine that’s hard in the extreme, usually as a result of high astringency, which gives it a rough, tactile sensation on the palate.
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.