How do you make yeast for baking bread
I'm looking for a simple and easy method
Distilled water, flour, air, time. This is a nice tutorial about sourdough starters(also describes the basic starter process):http://www.youtube.com/watch?v=4cyVJVeYB8M
You can't actually make yeast. That would be like making water or milk. You buy yeast at the store.