It may be that the dough is too hard to press because there is too little water during kneading.

You can make up the dough again, and you must control the ratio of flour to water. At the same time, we should also pay attention to the temperature. If the temperature is not enough when kneading dough, the potato flour will break easily after being pressed out.

Method of making potato flour:

1. First, prepare 5g of potato flour in a small bowl, add 3g of clear water, stir it while pouring, and stir it evenly until there is no dry powder, and precipitate it after stirring.

2. Put 25g of potato powder in a pot, add 1g of salt, and stir well for later use. Prepare another egg white and beat it into the bowl for later use.

3. Add 1g of clean water to a small pot, cover it and bring it to a boil, then quickly pour it into the potato powder in a small bowl, and then stir it well with chopsticks.

4. Just stir until it is thick, then pour the batter into the potato flour in the basin and add the beaten egg white. Fully and evenly by hand.

5. Potato flour is different from flour. Potato flour is light, so it will be sprayed out if you are not careful. We should try to knead it slowly first, and then knead it evenly with our strength at the back to make a smooth dough.

6. Then take it out and put it on the chopping board, and spray some oil on it to avoid drying it later. After spreading the oil evenly, divide it into small doses of uniform size.

7. Then knead the small dose slightly and knead it into long strips for later use. Boil water in the pot. When the water boils, put the flour paste into the machine and press it hard, and the potato vermicelli will be squeezed out.

8. Put it directly into the pot and cook it. Then prepare a pot of cold water, and put the cooked potato vermicelli into the cold water to cool it, so that it will taste more vigorous and smooth.

9. Then take it out and control the water, and you can make it into delicious food. If you do more, you can spray more oil after kneading the dough to avoid sticking together.