best way to utilize a casein. Half scoop it with a favorite whey or whey blend. Use the whey blend to help flavor the casein, and use the casein to help thicken whatever you are using the whey/blend for. Just be cautious on using casein when baking rising agents (pancakes, muffins, loaves, breads) because it is a thick powder. It won't rise to its full peak. Save the casein for baking things like cheesecakes, bread puddings, rice puddings etc.. Because those require the product to be thick, not things to rise.
I would half scoop Muscle Tech Vanilla Casein with MAN Sports Clean Protein (Expensive as FUU), Metabolic Nutrition PB Cookie, MSI Flavors just so I can get the enjoyable flavoring and make my pudding or shakes thicker.