Soak 1 cup raw organic almonds in filtered water for 6 hours (or overnight if you have the time). Drain water out of cup and put almonds in blender with 4 cups filtered water. Blend until smooth. Strain mixture through nut milk bag and add 1 tablespoon of vanilla extract. Store in a glass container.
I made this the other day after getting my hands on a 10 cup bag of almonds. I'm thinking of experimenting a little more next time to try for a sweeter, thicker milkshake like consistency.