Kumis (also spelled kumiss or koumiss or kumys, see other transliterations and cognate words below under terminology and etymology – old turkic: airag kazakh: қымыз, qymyz) mongolian: айраг, ääryg) is a fermented dairy product traditionally made from mare milk or donkey milk. the drink remains important to the peoples of the central asian steppes, of turkic and mongol origin: kazakhs, bashkirs, kalmyks, kyrgyz, mongols, and yakuts. kumis was historically consumed by the khitans, jurchens, hungarians, and han chinese of north china as well.kumis is a dairy product similar to kefir, but is produced from a liquid starter culture, in contrast to the solid kefir "grains". because mare's milk c...

Source: Wikipedia