Kefir grains is a gelatinous, tasteless and odorless mass that is in fact a specific and complex mixture of beneficial bacteria and yeast living in a symbiotic (harmonic) association. Kefir grains are not actual grains, they are just called “grains” because they are small and numerous, like grains. They are also similar to crushed cauliflower, but kefir crushed cauliflower sounds a bit strange, so let’s stay with kefir grains. Why are so interesting? The fact is, that kefir grains are used to make kefir.