Italian for "reserve," which in the wine world can only be applied to appellation wines that have been aged longer than regular wines. The better wines are usually chosen to become riservas. The total aging time varies from wine to wine.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.