- 1/4 cup chocolate syrup
- 1/2 cup cold milk
- 2/3 cup carbonated water, chilled
- Pour chocolate syrup into chilled large glass. Gently stir in milk. Holding the carbonated water about 5 inches from the top of the glass, slowly pour into the glass until a thick foam comes to the top of the glass.
- Using a long swizzle stick, stir the mixture once quickly, make sure the foam does not bubble over the glass. Serve immediately.