A shooter is a neologism for an alcoholic mixed drink that contains one ounce (33 ml) of two or more spirits. Some shooters also have a non-alcoholic ingredient. They are generally drunk quickly, rather than being sipped.
Shooters can be shaken, stirred, blended, layered, or simply poured. Shot glasses or sherry glasses are the usual drinkware in which shooters are served. They are most commonly served at bars, and some bartenders have their own "signature" shooter.
The ingredients of shooters vary from bartender to bartender and from region to region. Two shooters can have the same name but different ingredients, resulting in two very different tastes.