1 tsp powdered sugar
1/4 cup boiling water
1/4 cup rum
1 tbs butter
Sprinkle of nutmeg (optional)
Pour the 1/4 cup of rum into a mug or heatproof container. Pour in the 1/4 cup of boiling water. Stir in the powdered sugar and butter. Sprinkle lightly with nutmeg.