Kefir (also spelled as kephir or kefier, russian: кефир; adyghe: къундэпс; karachay-balkar: гыпы) ( kə-feer) is a fermented milk drink similar to a thin yogurt or ayran that is made from kefir grains, a specific type of mesophilic symbiotic culture. the drink originated in the north caucasus, in particular the elbrus region along the upper mountainous sections of circassia, karachay and balkaria from where it came to russia, and from there it spread to europe and the united states, where it is prepared by inoculating the milk of cows, goats, or sheep with kefir grains.the principal human benefit of consuming kefir, rather than the milk that it is produced from, is that adults often lose t...

Source: Wikipedia