1. Put a basin of water in the pot and turn on the fire
2. Wash plantain and put it in water
3. Wash the jujube and wolfberry and put it in the pot
4. Rinse the rock sugar with water, put it in the pot, three handfuls
5. Bring to a boil, wait for the rock sugar to melt
6. It tastes very good, put it in the refrigerator for a while, it will be sweeter
