Health freaks around the world are quite familiar with the fermented dairy product - kefir - which is rich in gut-friendly bacteria and is consumed for maintaining health of the immune system as well ...

Kefir, pronounced kee-feer, is a drink made from the fermented milk from a cow, goat, or sheep. Water kefir is similar but has a water base instead of milk. Kefir grains have yeast and good bacteria.