1. Put a proper amount of flour into a basin and add a spoonful of salt;

2. Add an egg white to the flour bowl;

3. Put a small bowl of cold water into the dough, first add a small amount of water, and knead the flour into dough by hand or chopsticks;

4. Press the acne into a piece by hand;

5. Dip your hand in some water, and then continue to knead the dough. Soak in water for two or three times repeatedly, cover the lid and wake up for 30 minutes;

6. Take a small piece after waking up, knead it into a long strip and cut it into small doses with a knife;

7. Roll the batter with a small rolling pin.