What is "mixer"?

A mixer is a type of drink that is used to dilute or add flavor to alcoholic beverages. Mixers can be non-alcoholic, such as soda or fruit juice, or alcoholic, such as vermouth or tonic water. They are typically used in cocktails or mixed drinks to enhance the flavor and texture of the beverage. Common types of mixers include soda, tonic water, fruit juice, and syrups. Mixers can be used to create a wide variety of drinks, from classic cocktails such as the martini or the daiquiri, to more modern creations such as the cosmopolitan or the mojito. They are often served over ice and can be garnished with fruit or herbs for added flavor and presentation.