Kefir grains are the center of the organic probiotic world today. With all of the health benefits kefir provides, more people are beginning to grow and use kefir. Sometimes reactivating kefir that has been sitting for a while proves to be impossible. Fluctuating temperatures, lack of food and chlorinated water are all reasons that kefir grains may have died.
Start the reactivation process.
Observe after 12 hours the milk level. If the level hasn’t dropped, wait another 12 hours. If the level has, then the cultures are not dead.
Recheck after another 12 hours. If the level of milk still hasn’t dropped, then the grains are dead and you need to start using another batch.