Place almonds in a container that has a lid; cover with water and place in to refrigerator overninght.
Place almonds with soaking water in the blender; add 4 cups of water and blend on high until completely blended.
Place the milk bag in a large bowl and empty the blender contents into the bag.
You will have to twist the top and squeeze as much of the milk out of the pulp as you can.
Empty the milk into a container to be stored in the refrigerator.
Reserve the almond pulp.