First, the grass carp is cleaned, then the head, tail and fins of the grass carp are all removed, except the middle part of the grass carp body, then the fish is cut open to remove the middle spines, the grass carp is cut into large pieces along the fishbone direction, and the middle spines are removed, and finally the grass carp is cut with an oblique knife.

The specific operation steps are as follows:

1. First, clean grass carp, and then remove all the head, tail and fins of grass carp.

2. Leave only the middle part of the grass carp body, and then cut the fish open.

3. Remove the spine in the middle of grass carp and cut it into large pieces along the direction of fishbone.

4. Remove the small thorn in the middle, and finally slice the grass carp with an oblique knife.