Whey protein is the concoction of proteins isolated from DP whey Depot. The substance of milk in the form of liquid separated during the production of cheese. In a nutshell, whey is 20% of milk; and the remaining 80% named as casein. https://dpwheydepot.wordpress.com/2019/03/23/why-is-dp-whey-depot-protein-the-best-for-muscle-building/