Soak in cold water for 6-8 hours. Of course, it is best to simply soak it and wash it first. Then the soaked water can be used directly for cooking. Otherwise, a lot of nutrients will be lost if you pour it away.

Usually cook for one to one and a half hours, first boil over high heat and then simmer over low heat. The white fungus can become sticky. However, the effect and taste of white fungus soup will be better if cooked with red dates and dried longan.