Soak soybeans overnight in water. They will grow to about triple in size, so be sure to use a 1 Liter or larger container.
Rinse and drain soybeans
Place soybeans in Vitamix with 1 Liter of water and blend on high for about 30 seconds.
Strain through a mesh strainer into a 3 qt or larger container. Use a spoon to scrape the bottom of the sieve to help speed things up.
Put the bean pulp back into the vitamix and add the other 1 Liter of water. Pulse a couple of times to combine.
Strain again through the mesh strainer, using the spoon to press out most of the liquid.
Discard the bean pulp.
Pour the liquid into your vitamix and see if you have 2 Liters. If not, add water to the 2 Liter mark.
Now, rinse your mesh strainer and 3 plus liter container and strain the liquid through using a fine cloth or nutmilk bag. This will make sure it is completely smooth.
Pour the soymilk into your instant pot and set it for Manual 7 minutes, Natural release. When the pressure comes down, it's ready to use hot or put into glass jars and seal for refrigeration.