2. Dry lotus seeds can be soaked for about 20 minutes in advance.
3. Tear the tremella into small pieces, put it in a casserole, add the soaked lotus seeds, and add water without ingredients.
4. Boil the water in the pot, cover the pot, simmer for 20 minutes on medium heat, and then simmer for one hour on low heat.
5. Wash the red dates in advance and add them to the ingredients in the casserole. At the same time, add appropriate amount of rock sugar, cover and cook for another 20 minutes.
6. Turn off the fire and wait until the temperature drops a little before opening the lid, which is sweet and fragrant.