Soak the soy beans overnight or until double in size. Rinse the soy beans a few times and try to remove the skins.
Add the soaked soy beans in a blender with water. Blend well.
Strain the mixture with a fine gauze to remove the pulp.
Bring the soy milk to a boiling and continue cooking for20 minutes over slowest fire. Watch out, the soy milk overflow very easily. Add sugar to taste before serving.
If you use a soy milk maker, you can make soy milk from dried soy beans. And the machine helps to cook the soy milk, just strain the soy milk with a tool attached.