
Airag, known as kymyz among Turkic peoples, has accompanied the lives of steppe horsemen for millennia, in lands where horse herding shaped seasonal migrations. Herodotus already reported in the fifth century BCE on Scythian practices of fermenting mare's milk, evidence of this ancient know-how. Marco Polo, crossing the Mongol empire, in turn described this white, sparkling beverage served at the tables of khans as well as simple herders. A drink of yurts as much as imperial courts, it symbolized the bond between man, horse, and the nourishing land of the great plains. Its preparation, passed down from mother to daughter through generations, remains to this day a powerful marker of identity for the nomadic peoples of Mongolia and Central Asia.
Airag presents a tangy and slightly sharp flavor, close to whey, with a discreet hint of alcohol born from natural fermentation. Its texture is fluid, effervescent on the palate, sometimes frothy depending on the intensity of beating. The aroma evokes raw milk and the smoked wood of the skin bag, with slightly acrid notes characteristic of traditional fermented dairy beverages.
Airag is traditionally consumed in summer and autumn, seasons when mares produce the most milk, and occupies a central place during Naadam festivals as well as in the daily hospitality offered to visitors of encampments. It is also customary to offer a cup as a sign of welcome or during family and community celebrations.
Originating from the Scythian steppes then widely spread among Mongol and Turkic peoples of Central Asia, airag has variants depending on regions and available animals, with Kazakh or Kyrgyz kymyz following very similar methods. Some communities extend fermentation longer to obtain a stronger beverage, while others consume it fresh and mild, shortly after the process begins.