you can grow your own if you are not a negligent mother like me

i was given a baby kefir which looks like a dried out bit of cauliflower.
it sits in milke and growns and once a day you tip off the milk and drink/ put on cereal or whatever

it is ages since i had my plant so the finer details of it i forget.

i made mine with skim milk powder mixed in water.
worked for me . it is sort of an aquired taste and i liked it... but got forgetful of the plants welfare.

when the plant grows to a certain size you can take off bits and give to friends. i know of some that were posted from here in australia to the USA and survived the trip and customs inspections.
that was 10 years ago

you can buy the baby at a health food store i am told

good stuff

DD