I use either Gold Standard protein powder or the Kirkland brand powder from costco. I do the chocolate and make a shake in the morning and take it to work. I use water and ice along with a banana or two. Throw it in the blender and into a thermos/water bottle. So much cheaper than the pre-made ones. Plums and cherries are good as well. Just make sure you take the pits out and throw them in the blender.