Grolsch Flip-top Bottle (750 ml)
Product Review (submitted on December 9, 2013):
I use these bottles for my constantly cycling water Kefir. I'm glad I got 3 of them. They keep an absolutely tight seal and after I pour off the kefir into them I just let them sit on the counter and continue to age and develop more fizz and healthy bacteria. This way I can keep a new batch brewing all the time and easily control the completed batches. I highly recommend this bottle system.