yogurt or cold almond milk, applesauce, blueberries, strawberries or cherries, an avocado, bananas, chocolate and some almond or peanut butter for extra protein - you do not taste the avocado but it makes the smoothie very creamy - if I want it colder I throw in a frozen banana - my Ninja does ok chopping frozen stuff. I have gotten avocado on sale, blended them in with some applesauce then frozen the mix - use the cubes when wanted.