here's a FANTASTIC site for all things kefir.
and no, it doesn't have to be made from dairy. what you find in the health food stores is crap compared to what you make on your own.
it's so fun to make!!! i'm addicted! i'm now having a blast experimenting with water kefir and just made the most decadent kefir smoothie with coconut milk, bananas, cinnamon, ginger, and vanilla. yum
email me for more info and definitely check out dom's site:Dom's Kefir In-Site