01 - Whip cold heavy cream with powdered sugar until soft peaks form. Refrigerate until ready to use.
02 - Combine hot coffee, brown sugar, and vanilla extract in heatproof glasses. Stir until sugar dissolves completely.
03 - Gently spoon whipped cream over each coffee, allowing it to float on the surface.
04 - Sprinkle with ground cinnamon or cocoa powder if desired. Serve immediately while hot.