i know this is a really old post but i came by it randomly; you can easily buy (or even make) milk alternatives! think about soy, rice, coconut, oat milks etc. and mix these with pure cocoa powder. if you buy the right kind of cocoa powder (so no nesquick b*llsh*t), mainly the pure cocoa powder, you will benefit even more from it than your regular off-the-shelf chocolate milk!