Hairtail bought in supermarkets or food markets is basically not killed, but frozen directly when caught. Therefore, if you buy frozen hairtail, you need to gut it before you can continue cooking. The treatment method of hairtail is as follows:

1, first thawing: soak hairtail in cold water until it becomes soft (hint: putting some salt in water will help to speed up the thawing time).

2. Hairtail treatment: there is a drainage hole near the tail of hairtail. Use scissors or a kitchen knife to cut from the drainage hole along the abdomen to the head and dig out the internal organs. Pay attention to the black membrane in the abdominal cavity, otherwise it will be embarrassing; Then dig out the gills, or directly turn around; As for whether the silver-gray film on the surface of hairtail should be removed, it depends on personal habits (it won't be fishy if it is not removed)