1, soak in rice washing water, because rice washing water can remove impurities in bracken, which can not only be soaked well, but also remove impurities. You can also put bracken in clear water and add some soft sugar, and its foaming effect is also very good.
2. Wash the bracken with clear water several times to remove other impurities such as dry sand, then soak it in clear water for a long time. After waiting for one day, put a proper amount of clear water in the pot, then blanch the dried bracken in the pot for a while, then soak it, wait for half a day, and finally put them in a fresh-keeping bag and then put them in the refrigerator for freezing.
3. Blanch it in boiled water, then soak it in water, wait for a day, and then wash it carefully, because bracken will be contaminated with many impurities during sun drying, so it needs to be soaked enough.
Introduction of bracken
It is a variety of European fern belonging to Pteridium of Pteridaceae, and its plant height can reach 1 m. The rhizome is long and transverse, densely rusty yellow, and then gradually falls off. Ye Yuansheng; The stalk is 20-80 cm long, the base is 3-6 mm thick, brown or brown straw color, slightly shiny and smooth, with shallow longitudinal grooves 1 strip. The leaves are nearly leathery or leathery after drying, dark green and hairless.