I haven't tried it myself, but I believe that it is possible to use store bought yogurt as a starter. You use a small amount, and if you keep some going all the time I think it lasts for quite a while. You have to buy the type that has live cultures in it, of course.
Edit: And when I said "store bought yogurt" I did mean non-dairy! I realized later that might have been misread.
Last edited by Crochetlove; 09-06-2014 at 11:04 AM.