blanch.

Pteridium aquilinum has bitter taste. The simplest treatment is to blanch Pteridium aquilinum, which can remove the bitter substances in Pteridium aquilinum and reduce the bitterness of Pteridium aquilinum. If it is dried bracken, it is recommended to soak it in clear water, and then blanch it.

Pteridium aquilinum is a kind of wild vegetable. During its growth, the wild vegetable will secrete picrin to protect itself from insects. Therefore, Pteridium aquilinum will have a little bitterness.

Extended information:

Fresh Pteridium aquilinum can be stored for a short time, and it is easy to get wet, and it will become sour and bitter. If this happens, it will make Pteridium aquilinum bitter, so it may cause abdominal pain and diarrhea if you continue to eat it, so it is not suitable for eating.

Some bracken still has a lot of fluff on it, which can be irritating, especially for people with digestive system diseases and allergies, so it may be more irritating, so clean up the fluff before eating, so that you can feel more at ease.

Reference: Baidu Encyclopedia-Pteridium aquilinum.