Navy Grog is a classic cocktail that originated in the 19th century, primarily associated with the British Royal Navy. It typically combines rum, lime juice, and sweeteners, often served over crushed ice. The drink was created to help sailors combat scurvy and dehydration while providing a refreshing taste. The recipe for Navy Grog can vary, but it usually includes a mix of light rum, dark rum, and demerara rum, along with grapefruit juice and honey syrup. This combination results in a balanced flavor profile that is both tart and sweet, making it a popular choice in tiki bars and tropical-themed gatherings.