The Original Brooklyn Egg Cream

Source: Complete Recipes

2 cup Milk
1/2 cup Seltzer; (from a pressurized bottle)
1/4 cup Chocolate syrup

Pour 1 cup of milk into a 12-ounce glass. Top with a spritz of seltzer so
that the white foam reaches the top of the glass. Place a spoon in the
glass. Pour 2 tablespoons of the chocolate syrup into the glass, hitting
the bottom of the spoon if possible, and stir with quick strokes to blend
the syrup into the milk without deflating the foam Repeat to make another egg cream.

Serve immediately. 2 servings