koumiss
noun
kou·miss kü-ˈmis 
ˈkü-məs
ˈkü-məs variants or kumiss
: a beverage of fermented mare's milk made originally by the nomadic peoples of central Asia
Word History
Etymology
Russian kumys, of Turkic origin; akin to Turkish kımız koumiss
First Known Use
1607, in the meaning defined above