You would think all oat milks are the same — but made by different companies they vary in nutrition content. Unlike nut milks — which have protein in them — (think almond milk, cashew milk, quinoa milk, flax milk, coconut milk) oats are just soluble fiber and carbohydrates. Home-made oat milk is literally just water and oats. The www.minimalistbaker.com describes how to make oat milk. Combining 1C rolled oats and 4 C water leads to 4 servings. Water and oats are blended in a high-speed blender and drained through a clean cotton dishtowel. The product is strained twice to remove excess starch. Over-blending can result in slimy milk.