Difference between Koumiss and Kumis

What is the difference between Koumiss and Kumis?

Koumiss as a noun is a fermented drink made from mare's milk, common among peoples of the central asian steppes. while Kumis as a noun is a fermented drink made from mare's milk, common among peoples of the central asian steppes.

We hope you now know whether to use Koumiss or Kumis in your sentence.