2. Soak mung beans in clear water for 1-2 hours, and then wash them for later use. The purpose of soaking is to shorten the cooking time later.
3. Find a deeper pot, pour in the soaked mung beans, add a proper amount of water, a little more water, and the ratio of water to mung beans is generally 2:1.
4. Chop the dried tangerine peel, add it, mix it with mung beans after cooking, and boil the mung beans, dried tangerine peel and rock sugar with high fire 10 minute, then turn to low fire for 20-30 minutes.
5. Cook until the mung bean explodes and blooms, and then turn off the flame. When it is cool, cover it and put it in the refrigerator for cold storage.