1. When killing eels, use three fingers of the left hand, namely the index finger, the middle finger and the ring finger, and then hook the eel's neck. At the same time, you need to hold a sharp knife in your right hand, and then pierce the tip of the knife into the neck root of the eel abdomen, and then you can cut the abdomen along the tail and clean it.

2. You need to put a proper amount of salt and vinegar in the basin, then add a lot of eel, then pour the prepared boiling water, and then cover it immediately. After the eel opens its mouth, take it out of the basin and wash its abdomen.

3. Chop off the head of the eel, cut it along the back, then take out the spine and internal organs, and then wash and cook the eel.