Butter is a rich, creamy dairy product made from churning cream or milk. In the context of alcohol and cocktails, butter is typically used in warm, comforting drinks like the classic Hot Buttered Rum. The butter adds a smooth, rich texture and a deliciously creamy flavor, enhancing the drink's overall warmth and depth. It pairs well with spices such as cinnamon, nutmeg, and cloves, as well as spirits like rum and whiskey. Butter can also be used in some dessert cocktails to create a luxurious, velvety mouthfeel.