1/4 cup sugar (2 ounces)
1 1/2 cups milk
2/3 cup strong coffee or espresso
Whipped cream, for serving
In a medium bowl, stir together cocoa powder and sugar until thoroughly combined. In a medium saucepan, heat milk over moderate heat until steaming. Whisk in cocoa/sugar mixture along with coffee, whisking rapidly until hot and frothy. Divide into warmed mugs and top with whipped cream.