I tried to recreate the smoothie that I tasted at my friends house as soon as I got back home.I took samples of my first attempt around to all my family members and withheld the identity of the ingredients. One by one, they all had a similar experience. First, they all let me know it was yummy and then they guessed (incorrectly) what was in it. Eventually, I took pity on them and let them in on the smoothie's well kept secret. They were all surprised.