baking sourdough without yeast?
I had a customer ask me if I could make sourdough bread without yeast as his daughter isn't supposed to have yeast. I don't make sourdough yet. I thought that I read somewhere on this site that you can do sourdough without yeast but does that mean that the bread would be yeast free as I thought that the starter picked up yeast from the air. Is it possible to make sourdough bread with no yeast?