Airag is fermented mare’s milk with a slight alcoholic content. It dates back to the Mongol times when traditionally guests in a nomadic ger would be offered a bowl of airag along with a plate of dairy treats.
In Mongolia, the milking season for horses traditionally runs between mid-June and early October.
According to nomadicboys.com, Airag has a bitter and sour taste. It is also supposed to have “cleansing” qualities and you are warned to go easy on it. A few sips is more then enough to satisfy your airag curiosity once and for all!
Fermented camel’s milk is also made, but it does not come highly recommended.