Kefir Fermenter 350 ml / 12 oz with Fresh Kefir Grains Dramatically simplify homemade kefir process. Just pour milk and drink fresh kefir in 20-24 hours. Say NO to strainer, spatula, dish washing and white spots. Simple. Refillable: can be made fresh daily. Kefir Grains in container are fresh and ready for fermentation from the first batch. Saves money when you make your own refills. ONE STEP PROCESS: just add milk to jar and drink after 20-24 hours.