Preparation materials: flour 320g, egg white 36g, water 1 20g, fine sugar 50g, yeast 3g, vinegar 4g, baking soda1g..

Production steps:

1. Mix all the materials together and knead them into a ball.

2. Knead into a smooth and delicate dough.

3. put it in a pot, put it in a place that doesn't matter at home, and let it stand for one night.

4. Take out the dough the next day, and exhaust the fermented dough until there are no obvious pores. Rub some baking soda into it.

5. Divide dough into 10 pieces, each piece is about 53g. Round up.

6. Take a dough, flatten it and roll it slightly into a circle.

7. Make steamed bread.

8. Set all the small dough, let the dough ferment to about 1.5 times the original size, gently press the surface and slowly rebound for about 30 minutes.

9. Put water on the pot, turn on the fire, steam for 9 minutes, simmer for 5 minutes after turning off the fire, and then open the lid.

10, steamed and ready to eat.