A shooter, or shot, is a small serving of spirits or a mixed drink (usually about one US fluid ounce or 30 millilitres), typically consumed quickly, often in a single gulp.
It is common to serve a shooter as a side to a larger drink.
[1] Shooters can be shaken, stirred, blended, layered, or simply poured.
They are most commonly served at bars, and some bartenders have their own signature shooter.
Two shooters can have the same name but different ingredients, resulting in two very different tastes.