To make the green beans into a good cold powder. There are six steps: First, buy good fresh green beans, wash with water, and then add water I have soaked overnight. Second, the soaked mung beans fished out and cleaned, water milling process or crushed soybean milk. Third, the soymilk with a clean sand cloth for consideration. The top layer of the sand cloth is bean dregs, which can be made into bean paste buns. Under the sand cloth is pure green soybean milk. Fourth, the mung bean paste with a water tank or water basin, sedimentation, about ten hours or so. Slowly pour the precipitation above the water, the remaining bottom is mung bean water powder. Fifth, the beginning of the production of cold flour, with an iron pot washed and boiled water, water boiled water mung bean flour with the water side of the twisted side of the pot, especially the bottom of the iron pot, with a spatula quickly twisted, the proportion of their own mastery, mung bean flour pulp is cooked, it is loaded in the basin, cold after shaping. Is the mung bean cold noodles. As long as the proportion of water and powder to master can be directly with fresh water and mung bean water powder, quickly twisted into cool powder. Sixth, the cold after shaping the mung bean cooler, knife or processing cooler utensils for knife shaping mung bean cooler into the bowl or plate, and then add spices suitable for their tastes, can be eaten, mung bean cooler, a great success!