Pteridium aquilinum is a general term for wild ferns, and its tender buds are edible. Pteridium aquilinum is rarely polluted because of its special fragrance. As a delicious vegetable, it is an important foreign trade native product in northern China, and enjoys the reputation of "king of delicacies" at home and abroad.

As early as the early years of the Zhou Dynasty in China, it was recorded that Boyi and Shu Qi collected pteridophytes and ate them under Shouyin Mountain (now southwest of Xi, Shaanxi). There are many edible ferns, such as ferns, podophyllum, Athyrium and many kinds of rosettes. The collected young leaves of Pteridium aquilinum must be soaked in rice swill or clear water for several days before eating to remove toxic components. Pteridium aquilinum can be fried, made into soup, made into salad and dried into vegetables.

The famous bracken includes mountain bracken, Osmunda japonica, yellow melon fragrance, monkey leg and so on. Pteridium aquilinum is a variety of pteridophyte, also known as bibcock, which grows all over the country. Young leaves collected in spring can be washed and salted. Osmunda japonica is a plant of Osmunda japonica, also called Osmunda fasciculata. In spring, you can pick young leaves, boil them in water, soak them in clear water for a while, take them out to dry, and then rub them with your hands. Cooking has a bitter and fragrant taste. Huangguaxiang is a kind of podophyllum fern belonging to Coccidae, which grows in wet and sparse forests or rivers. In late spring and early summer, when the young leaves grow to 13- 15 cm, the brown scales of the young leaves are ground flat, then salted or boiled in water, taken out and dried. Stir-fried dishes are tender and crisp, with cucumber flavor. Hericium erinaceus, also known as Pleurotus eryngii, is produced in the northeast, gullies in North China or shady and humid places under forests. Pick tender leaves in spring, boil them in water, dry them in the sun, remove scales and hairs, or add salt.

Pteridium aquilinum resources in China are rich, which is a valuable wealth to be further developed and utilized. For example, exporting a ton of dried Osmunda japonica is equivalent to exporting 40 tons of soybeans in price. At the same time of development, we must pay attention to the protection of resources, and we can't take the method of lighting up at the first sight of germination.