The ratio of mung beans to water is 1:10.

Preparation materials: 210 grams of mung beans, 2100 grams of water, 1 small piece of ginger, 1 piece of borneol.

1. Soak mung beans in water for more than 2 hours, as shown in the picture below.

2. Then wash the mung beans and slice the ginger.

3. Put mung beans and ginger slices into the soup pot, as shown in the picture below.

4. Add appropriate amount of water, the ratio of mung beans to water is 1:10.

5. Cover the pot, bring to a boil over high heat, then turn to low heat and simmer slowly, as shown in the picture below.

6. Boil until the mung beans are shelled and sandy, as shown in the picture below.

7. Finally add appropriate amount of born sugar and cook until dissolved, as shown in the picture below.

8. Once melted, take it out and the mung bean paste is ready.