1, peel the potatoes first, slowly insert the bamboo stick in the middle and wear it out from the other end.

2. Cut the knife from above, the knife is oblique, the tip of the knife is upward, and stop after cutting to the position of the bamboo stick. Be careful not to use too much force to avoid breaking the bamboo stick.

3. Rotate while cutting, and let the knife slowly rotate downward. The thickness of each piece is about 4 mm, and it should not be cut too thin, otherwise the joints between potato chips are easy to break.