koumiss

noun

1. (uncountable, usually)A fermented drink made from mare's milk, common among peoples of the Central Asian steppes.

   “[Of a Persian wine] One name for this wine was 黑水晶 "black crystal"; it has also been confused with koumiss.”

   “Here, for example—a Scythian koumiss vessel, third century B.C. You can clearly see the Greek influence, especially in the friezework.”