All materials can be changed according to personal preference
Tremella in advance, put in a pressure cooker with appropriate amount of cold water (water is added according to the amount to be done)
In addition to the yam rock sugar, the other materials are put into the pressure cooker, cooked in the pressure cooker, and then boiled for 3-5 minutes.
Wait until the pressure cooker is finished. After you open it, put it in rock sugar, yam, boil until the pressure cooker is on again, 1-2 minutes, turn off the heat.