01 - Brew fresh coffee using medium or dark roast beans. Pour evenly into two heatproof glasses or mugs, filling each about three-quarters full.
02 - Stir brown sugar and vanilla extract into the hot coffee until completely dissolved. Adjust sweetness to personal preference.
03 - In a small chilled bowl, whip the cold heavy cream with a whisk until just thickened and pourable, reaching soft peak stage. Avoid overwhipping.
04 - Hold a spoon upside down over the coffee surface and gently pour the whipped cream over the back, allowing it to float on top without mixing.
05 - Dust with ground cinnamon, nutmeg, or dark chocolate shavings if desired. Serve immediately, sipping the coffee through the cream layer.