1 green beans washed and soaked in water overnight, soaked green beans into a stainless steel pot with water and cook on high heat for 8 minutes and fish out; put the cooked green beans into a blender while hot and add water to puree.

2 Put the pureed green beans into a fine mesh strainer. (This is quite a time-consuming chore).

3Put the filtered mung bean paste into a stainless steel pot and add 200 grams of sugar, 100 grams of powdered milk, and salt and simmer over low heat until the sugar melts.