In a large mixing bowl, whisk together flour, baking powder, espresso powder, sugar, and salt. Make a well in the center and add the egg, milk, and melted butter. Stir together until combined (a few lumps are okay).
Pour 1/4 cup of batter onto a heated griddle and cook each side until lightly browned. Serve hot with whipped cream and mocha syrup (below).
1/2 cup strongly brewed coffee (or 1 1/2 teaspoons espresso powder dissolved in 1/2 cup water)
1/4 cup cocoa powder
1/4 cup granulated sugar
1/4 teaspoon salt
1 teaspoon vanilla extract
In a small saucepan, whisk together coffee, cocoa powder, sugar, and salt and bring to a simmer over medium-low heat. Stir until syrup begins to thicken, about 5 minutes. Remove from heat and stir in vanilla extract. May be served warm or chilled (and is especially delicious on top of ice cream).