Rum, a versatile ingredient in the world of alcohol, is a distilled spirit made from sugarcane byproducts such as molasses or sugarcane juice. It is commonly aged in oak barrels, which imparts a rich, complex flavor profile ranging from light and sweet to dark and robust. The aging process and the materials used in production significantly influence the final taste, making rum a unique and diverse spirit.

In the context of cocktails, rum serves as a fundamental component in a wide array of classic and contemporary drinks. Light rum (white rum) is often used in cocktails like the Mojito and Daiquiri, where its subtle flavor allows other ingredients to shine. Dark rum (aged rum) provides depth and complexity in drinks like the Dark 'n' Stormy and Mai Tai. Spiced rum, infused with flavors such as vanilla, cinnamon, and clove, adds an extra layer of warmth and character to cocktails, making it a popular choice for creative mixology.