I've tried the casein in the flavor cookie. The powder dissolves in milk and in water very well. The taste is very delicious. If you do it exactly according to the manufacturer (30g powder in 250 ml liquid) of the shake is a little too sweet for my taste. I have always followed a little less taken or added milk or water. Very positive, I find that the powder is almost completely dissolves so that you drink at does not feel there are still unresolved powder residues. The consistency of the shake is very creamy but not too thick. I'd shake again buy any time. The values are also fine. The Shake keeps some time tired so perfect before training.