Blend frozen Acai, banana, and cherries until combined and chunky. Then add to the blender the protein powder with water or milk, and blend until smooth. Pause blending periodically to spatula the ingredients off the sides of the blender towards the middle. Smoothie bowls are meant to be super thick and scoopable with a spoon. Start with ¼ cup, but you may also need to add more liquid if your blender isn’t as powerful.