Brown Sugar is a sweetener that contains molasses, giving it a rich, caramel-like flavor and a moist texture. In the context of alcohol and cocktails, brown sugar adds depth and a slightly toasty sweetness. It pairs well with spirits like bourbon, rum, and whiskey and is often used in cocktails such as the Old Fashioned, Mojito, and Dark 'n' Stormy. Brown sugar can be used in syrups or directly muddled in drinks to enhance the complexity and provide a warm, comforting sweetness that balances the other flavors.