The "On The Rocks" cocktail refers to a drink served over ice cubes in a short glass, typically a rocks glass. This method is commonly used for spirits like whiskey, rum, or tequila, allowing the drink to chill while slightly diluting it as the ice melts. Serving a cocktail "on the rocks" enhances the drinking experience by maintaining a cooler temperature and providing a refreshing sensation. Popular choices for this style include classic cocktails like the Old Fashioned and Margarita, which can be enjoyed with or without additional mixers.