A concept is the arrangement of Hot
Buttered Rum as a style.
I added Coffee liqueur (As a matter of fact, vanilla is in,
too.) Kahlua as a point taste element.
I think that you can receive it deliciously, when you are
reading a book before sleeping or you want to be warm.
Use the heavy Rum of which is not defeated by the butter,
though it doesn't need to be dark specially.
2oz. Dark Rum (Heavy)
1teaspoonful Powdered Sugar
Use 8oz. heatproof tumbler and fill
up with very hot water. Float a lump of butter