The Ruby Rum Sunrise is a rum-based drink is made with Rum, Grapefruit Juice, Sour Mix, and Grenadine Syrup. The tart grapefruit juice pairs perfectly with the sweetness of the rum, and the Grenadine gives the drink a beautiful sunrise-esque color. The history of this cocktail is unclear, but it is believed to have originated in the 1970s. It was likely created as a way to use up leftover ingredients from other drinks, such as the classic Tequila Sunrise. Whatever its origins, the Ruby Rum Sunrise has become a beloved summertime staple. So, next time you're looking for a refreshing and easy-to-make cocktail, look no further than the Ruby Rum Sunrise!