cat pee
A classic aroma description for Sauvignon Blanc (more often found in those from the Loire, rather than from southern hemisphere wines), which could be compared to a whiff of ammonia.
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.