1. cut the crown of shiitake mushrooms inward about 3 degrees along the circular diameter.

2. Cut a knife at the same angle on the other side of this diameter, so that the cut mushrooms can be removed.

3. rotate the shiitake mushrooms by 6 degrees, and use the same knife method to cut a diameter of shiitake mushrooms.

4. Continue to rotate 6 degrees and cut the last knife with the same knife method, so that a cut mushroom is finished.