The yogurt 'starter' comes from the live culture yogurt that you would buy fresh to add to the milk for each batch. Or maybe use some of your own yogurt to make another batch, sort of like keeping sourdough going.
The goal is to have yogurt, without other 'interesting' additional critters growing in it.
Mary
The goal is to have yogurt, without other 'interesting' additional critters growing in it.
Mary