Cocktails with butter?! Well, it's not very common – except in warm, spiced drinks for chilly times.
Light Rum, Simple Syrup, Butter, Apple Juice (Hot), Lemon
Dark Rum of Jamaican Type, Runny Honey, Butter, Boiling Water
Aged Rum of Cuban Type, Cream, Butter, Coffee, Orange
Dark Rum (aged), Boiling Water, Honey, Butter, Nutmeg, Lemon, Cinnamon Cane
Bourbon, Simple Syrup, Butter, Boiling Water