Soak 1 cup cashews for several hours or overnight in warm water. Drain and rinse the cashews then put them in a blender with ½ cup water, 1 T nutritional yeast and salt to taste. Blend on high speed until the mixture is very smooth. You can skip the soaking if you have a high speed blender.
This is our adaptation of a recipe from Vegan Outreach. Check out the organization at http://veganoutreach.org/