Brew coffee: Prepare one shot of espresso or half a cup of strong brewed coffee.
Make chocolate mix: In your mug, add cocoa powder and sugar. Pour in a small splash of the hot coffee and whisk until smooth.
Heat the milk: Warm the milk in a saucepan over medium heat until steaming (avoid boiling). Froth it using a frother or whisk for a creamy texture.
Combine: Pour the rest of the coffee into the chocolate mixture, stir well, then slowly add the steamed milk while stirring continuously.
Finish: Top with whipped cream and a sprinkle of cocoa powder or chocolate shavings.
Serve: Enjoy your warm, chocolatey mocha immediately!