Stir together the hot coffee and Irish cream liqueur in a glass mug.
Top with the whipped cream and shaved chocolate, and serve immediately.
Notes
Use hot coffee: Freshly brewed coffee helps blend the flavors better. Don’t overwhip: Soft peaks give the best creamy texture. Chill your cream: Cold cream whips up faster and holds better. Serve immediately: This drink is best fresh before the whipped cream melts.