In a small bowl, mix together confectioner’s sugar, unsweetened cocoa powder, ground cinnamon, ground nutmeg, and cayenne pepper.
Add strong brewed coffee to a saucepan along with the mocha mix and stir well. Heat on medium heat until the mixture comes to a boil.
Mixed coffee and mocha mix.
While the coffee mixture is heating, froth hot milk using a handheld electric frother or a frothing machine.
Pour the coffee mixture into a mug.
Pour foamy milk on top. Top with whipped cream (optional) and serve immediately.