Wash the mung bean with clean water. The floating beans are the no-good ones, so throw it out.

Add water and boil until the mung bean become soft and tender.

Switch to small fire and add palm sugar. You can chop the sugar to make it easier to melt. Stir the mixture

Taste your soup. Add salt and sugar as needed.

Turn off the fire. Now on another pan heat up the coconut milk until boiled.

Add up the coconut milk to the mung bean soup. You can add shaved ice to serve it cold.