Egg Cream
Egg Cream: Chocolate syrup, Milk and Soda Water. Served in a mug. Mix syrup and milk in a fountain glass. Add soda water, serve with a straw.

The Spec
Method
Mix syrup and milk in a fountain glass. Add soda water, serve with a straw.
Served in a mug.
Spec held as sourced — TheCocktailDB. The house never guesses a drink.
Drinks that share this spec
Shares Chocolate syrup and Milk with Just a Moonmint. If your shelf makes Egg Cream, it is already most of the way to these: