I'll admit I was skeptical about the combination of grape juice and buttermilk, but I was pleasantly surprised! Neither of the flavors were overpowering, but you could still taste them! :) I left out the almonds due to an allergy and I subbed fat free vanilla yogurt for the raspberry yogurt. Update: I made it today using 1 cup nonfat plain yogurt, 1 Tbsp. sugar, and tossing in a few raspberries. Delicious! Thanks again for a wonderful smoothie recipe!