Koumiss n. (Written also koumyss, kumiss, kumis, kumish, and kumys) An intoxicating fermented or distilled liquor originally made by the Tartars of central Asia from mare's or camel's milk. It can be obtained from any kind of milk, and is now largely made in Europe. "Koumiss has from time immemorial served the Tartar instead of wine or spirits."
... 1 to 1-1/2 quarts fresh milk, and in certain cases warmed milk, taken by the spoonful; the quantity to be increased, if necessary, to 3 and 4 quarts per day. Instead of milk, buttermilk, sour milk, kefir, koumiss or yoghurt may ... — Valere Aude - Dare to Be Healthy, Or, The Light of Physical Regeneration • Louis Dechmann