Brew a cup of strong coffee.
Take a lemon wedge and run the cut edge along the rim of a glass, coating it with lemon juice.
Dip the rim of the glass into superfine sugar, pressing gently to ensure the sugar sticks. Shake off any excess sugar.
In the sugar-rimmed glass, pour in the rum and triple sec.
Carefully ignite the mixture using a lighter or match, rotating the glass slowly to warm the rim and allow the sugar to caramelize.
Once the sugar has caramelized and the flame has subsided, add Kahlua to the glass.
Now pour hot coffee into the glass, filling it to the desired level.
To garnish, gently float whipped cream on top of the coffee.
Finally, sprinkle grated nutmeg over the whipped cream for an extra touch of flavor and visual appeal.
