What does "Up" indicate when ordering a drink?

When ordering a drink, the term "Up" indicates that the drink should be served chilled. This typically means that the beverage is prepared by shaking or stirring with ice and then straining it into a glass without ice, resulting in a cold drink that is served in a glass. The “up” presentation provides an elegant look and is commonly used for cocktails that are best enjoyed cold, such as martinis and some other mixed drinks. Therefore, when ordering a drink and requesting it "up," it signals the bartender to ensure the drink is chilled appropriately before serving, which enhances the overall drinking experience.