The bitter taste of nine layers of peel and dried cuttlefish may come from the fact that the internal organs were not completely removed and cleaned when handling the ingredients.

It is suggested that the nine layers of peel and dried cuttlefish should be thoroughly washed before cooking, especially the dried cuttlefish. It is necessary to peel off the epidermis and pull off the gray bones, put the squid in a basin filled with water, pull out the internal organs in the water, then dig out the eyes of the squid in the water to make it run out of ink, and then wash the inside and outside with fresh water several times.

The above suggestions are for reference only. If you have any questions, please ask a professional chef.