-4-6oz of full fat coconut milk that is BPA free. The less you use, the thicker your smoothie will be. I prefer an extremely thick smoothie that I have to eat with a spoon, so that the digestive enzymes in my mouth can work on pre-digesting before the food even makes it to my gut. Like my mom always said, “Chew your liquids and drink your solids.” Didn’t you always wonder what that means?