On the Rocks

Serving a drink “on the rocks” means serving it over ice cubes. When you order a drink “on the rocks” at a bar or restaurant, you will typically receive a glass filled with ice cubes, and the bartender will pour the beverage of your choice (usually alcohol, such as whiskey or vodka) over the ice. The ice not only chills the drink but also slightly dilutes it as the ice melts, which can subtly change the flavor and strength of the beverage.

This method of serving is popular for certain types of alcoholic beverages, as it can mellow the flavors and make them more palatable to some people. It’s commonly associated with whiskey, Scotch, bourbon, and other spirits that benefit from a bit of dilution and a cooler temperature.