Wash the mung beans and drain the water (optional). Add the mung beans to a bowl. Top it off with 2 cups of water.
Cover the bowl and let it soak for 8-12 hours. Preferably during the daytime.
After the soak time is over, drain the water and set it aside.
Spread a cheesecloth or a muslin cloth over a mesh strainer and add the soaked mung beans to it.
Gather the edges of the cloth, leave about 3-4 inches of space and secure the ends with a rubber band or a twine.
Leave it in on your kitchen counter for 12 hours preferably overnight. *
Undo the fastening around the cloth, transfer the sprouts to an airtight container.
Use it as right away or store in in the refrigerator!