Soak the soybeans in water overnight for a minimum of 12 hours.
2.Drain the soybeans and remove the outer skins.
3.Blend the soybeans with 3 cups of water (750 milliliters) until well blended and almost smooth.
4.Strain the blended mixture using a cheesecloth, a napkin or a strainer.
5.Pour the mixture in a saucepan, add 1 cup of water (250 milliliters). Place the saucepan on the stove over high heat and bring to a boil. Stir and skim foam.
6.Cook over medium heat, stirring occasionally, for 20 minutes.
7.Let cool the soy milk. Store the soy milk in a sealed container in the fridge for four or five days