Let me talk about my operation steps for your reference.
1, wash mung beans and put them into the rice cooker.
2. After cooking for 10 minutes, turn the switch of the rice cooker back to the heat preservation state. (Don't open the lid)
3, heat preservation for 30 minutes (can make mung beans bubble quickly) (the story of soaking mung beans in thermos can be searched)
4. Then continue to let the water boil.
5. Remove the small exhaust cover on the rice cooker. So that gas can be quickly discharged without liquid overflowing.
7. Finally, mung beans will soon be boiled into sand and put in rock sugar. Adjust your taste.
8. Complete
My own method of operation. Give it a try!