This is my take on the Famous New York Egg Cream (Seltzer, Chocolate Syrup and Milk)
1 can Coca Cola (can use diet)
Chocolate Syrup, to taste
1/4 cup Milk
Pour Coke into a tall glass.
Add syrup to taste, stirring well.
Add milk to fill the glass and stir.
You can use a scoop of ice cream in place of milk.