Appropriate amount of starch can be added as follows: 1. Preparation materials: appropriate amount of mashed potatoes and appropriate amount of starch.

1. Add appropriate amount of starch to mashed potatoes, add starch while kneading, knead into dough, and put it in the refrigerator for one night.

2. Take it out the next morning, rub it into small balls and flatten it.

3. Heat the electric baking pan and brush the oil, and add the potato cake embryo.

4. Burn until golden on both sides.

5. Serve the ball.