Muscle & Strength    how   whey  protein   is made                                        * How   does your post-workout shake    transform  from milk to high quality  whey?             1*Whey protein can be manufactured directly from milk or even cheese.                                  2* whey is separated from the milk using straining   methods resulting in a liquid whey product    3* wheny is then pasteurized using HTST pasteurization   (high temperature/short time) at 161,'F for 15 seconds.