2. Steam in a pot.

3. Add appropriate amount of white sugar to the cooked yam while it is hot.

4. Add proper amount of pure milk.

5. Press yam into yam mud.

6. Add proper amount of yeast into the yam mud.

7. Stir with chopsticks until the yeast melts.

8, add the right amount of flour.

9. Live into a slightly softer dough by hand.

10, cover with plastic wrap and ferment in a warm place for one hour.

1 1, take out the dough and knead it into small round cakes.

12, put it in the electric baking pan and cover it with a layer of plastic wrap. Don't plug it in yet.

13. After fermenting in the electric baking pan for 40 minutes, turn on the power and fry the cookies until they are golden on both sides.