The cappuccino's nearly even blend of espresso and warmed milk may account for its wide popularity. In Italy, where it was named for the brown-and-white cowls of the Capuchin monks, it is the classic morning beverage.
Heat 1 cup milk in a saucepan over medium-low heat until milk is steaming.
Using a frother, whip 1/2 cup cold milk until foamy. Divide 1 cup espresso between 2 coffee cups. Divide warmed milk between cups. Spoon milk foam on top to taste.