Hailing from Turkey, ayran is a refreshing, non-sweetened yogurt drink popular throughout the Middle Eastern world. It's typically a mixture of plain yogurt, water and salt. Some versions are flavored with garlic or mint. Ayran is called abdug in Iran and than in Armenia.
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.