This product works effectively in regards to what you want a casein shake to do, it mixes ok, not as good as Optimum Nutrition's one, and it tastes ok as a shake, again not as good as Optimum Nutrition either, which in my opinion is the best one you can buy, this product however is competitively priced which is why i opted to try it out, you get 700g more with MP for the same price as ON, in this