Quick soaking method: put the fungus in a fresh-keeping box and inject warm water at 20~25°C. It is better to just submerge the fungus in water, and the amount of dried fungus should be controlled at one-third of the fresh-keeping box so that the fungus will swell. Close the fresh-keeping film cover, shake the fresh-keeping box up and down, left and right with one hand or both hands, and keep shaking at a high frequency. Ordinary dry wood can be soaked in 4-5 minutes, and larger dried fungus can be soaked in 7-8 minutes. But the hair rise rate is much lower than that of cold water.

Soak the hair with rice-washing water: It would be better if you soak the black fungus in rice-washing water. You can soak the black fungus directly in the rice-washing water, or you can boil the rice-washing water and let it cool before using it. It looks more plump and soft, and the taste is much more delicious. Rice washing water contains starch, which can effectively remove impurities in fungus that are difficult to soak out.
Soaking in light salt water: add a little salt to the water when soaking the fungus. Soaking the fungus in light salt water can speed up the growth of the dried fungus. In light salt water, the fungus only needs to soak for 1-2 hours, and soak in salt water Washing the fungus can also effectively wash away the sand in the fungus.