1 first of all, you can't use yeast or baking powder, so you need a dough starter, that is, old flour fertilizer, and then dilute it with water to make a uniform paste.

2. Stir the flour and the old batter with chopsticks, and stir the flour by hand until it doesn't stick to the basin. After mixing, cover the dough with a wet drawer cloth and wait for 4 hours to make it natural.

3, there will be sour taste in the process, you need a spoonful of alkaline noodles, and the alkaline noodles are rolled into powder with a rolling pin. No small particles, spread evenly on the dough and knead the alkali evenly by hand.

4, then ferment for a while, the acidity will weaken, and finally you can steam steamed bread or do something.