There are multiple oat milk recipes that are suitable for raw foodists. Quick oats or rolled oats, either soaked overnight or dry, can be blended with water and strained to make oat milk. If you have a coffee grinder, you can also try grinding the oats on the finest setting and stirring them into water.
You can also try blending cooked oats with water to make the milk creamier, or boiling the oats in an access of water and staining the mixture. The more powerful your blender, the smoother your oat milk will be, if you have a soy or nut milk maker, you can use this to make oat milk as well.
A basic ratio for oat milk is a oat : water ratio of 1:2. However, it is advised that you experiment with the thickness of your beverage. You can make your oat milk as thick, creamy, or thin as you would like by straining the blended mixture more or less.