I've been fighting whey protein sticking and clumping in the glass. I do use a blender when adding peanut butter or bannana but when I'm on the go I just want to mix it with milk or water with a spoon. I just dump a scoop in the glass and add the milk/water. Last night I poured the milk in first and started to stir. Then I tapped the scoop on the glass and let a little fall in at a time while continually stirring. I slapped my forehead saying "alright, whey to go!!" It took about 30-40 seconds and I got a good wrist workout. The result was completely dissolved choco-licious yummy protein drink - without a blender! I'm sure most of you have already discovered this way of stirring in stubborn-to-dissolve protein powder. I'm kinda slow 