Kefir is a fermented beverage, filled with probiotics and other healthy ingredients. Kefir is made by leaving special reusable living cultures, called kefir grains, in a liquid such as milk or sweetened water to ferment for about 24 hours. The kefir grains consist of proteins, polysaccharides and a mixture of several types of micro-organisms, such as yeasts and aroma and lactic-acid forming bacteria proven highly beneficial to humans. Kefir helps boost your immune system, improves your digestion, helps regulate your cholesterol, and has other numerous beneficial effects.
Milk kefir is a result of fermentation of milk with milk kefir grains.
Water kefir is a result of fermentation of sugar water with water kefir grains (also known as tibicos).