Wash soybeans thoroughly and soak them for about 8 hours.
Peel the soaked soybeans, then boil them in hot water for 10 minutes.
Drain and cool the cooked soybeans.
Add the soybeans and water to a blender and blend until smooth.
Strain the blended soybeans through a sieve to make a silky texture.
Cut the tofu into small pieces and blend with the soybean milk again until smooth.
Season with salt to taste.
Chill in the refrigerator before serving in a bowl.