LOBLAWS sells bacteria culture in the Organic fridge section, it's something like $30 but comes with many packets. To make it you add it to fresh milk which then is placed on your countertop.
My friend is growing Kefir in vast quantities to restock the Ottawa supply. If you need some, he will give it to you for free. If this is of interest to anyone who wants to grow Kefir, I can put you into contact with my friend.
effervescence
newbie