Best way to stir chocolate milk...

[TGregg]

The best way is to lick the area between your thumb and index finger, sprinkle Quick on it, lick it off, and chase it with a shot of ice cold whole milk.

 

[Rogue]

I use a standard fork and change directions after getting it up to speed in a good "swirl" going one direction, then change to the opposite direction. Works for me. That, or I just buy a half gallon and put the chocolate syrup in after drinking a small glass out of the 1/2 gallon bottle and then shake whenever I want a glass.