no flavor can cover taste of hydrolyzed casein , I would use one of premium orange flavors , hydrolyzed casein is very bitter , very
premium flavors have sweeteners in them , acesulfame K and splenda
I would recommend you to order PeptoPro instead hydrolyzed casein , its a very little biter , price is higher but serving is less , 10g serving , and its the best protein I ever tried , you can lower price with 5% discount code ( my is MOU110 ) , for flavors I would recommend you premium orange , and use peptopro with WMS and for WMS take same flavor as for peptopro or use lime aide instead , I like mixing orange and lime aide