Shot Glass
Also known as: shooter glass, whiskey glass
Definition
A small glass designed for serving spirits neat in a single gulp, or for measuring liquid ingredients.
## What Is a Shot Glass?
A shot glass is a small, heavy-bottomed glass designed for serving spirits in a concentrated single pour — typically consumed in one or two swallows. In the United States, the standard shot is 1.5 ounces (44ml), which is also the standard jigger measurement used across cocktail recipes. Shot glass sizes vary internationally: a single in the UK is 25ml, in Australia 30ml, and in many European countries 40ml.
## History and the Measurement Function
Shot glasses served an important measuring function in American bars before standardized jiggers were universal. A "jigger" was literally a small shot glass of a specific size. The term "shot" appears in late 19th-century American slang for a small quantity of whiskey. During Prohibition, the word became associated with the small, hurried pours consumed quickly in speakeasy environments.
## Serving vs. Measuring
Shot glasses serve two distinct bar functions: as presentation vessels for spirits neat or layered shooters, and as informal measuring tools when a proper jigger is unavailable. A standard 1.5-oz shot glass functions identically to a jigger's large side. However, shot glasses typically lack the interior measurement markings that Japanese-style jiggers provide.
## Layered Shooters
The flared shot glass design is suited to layered shooters built with multiple ingredients in distinct bands by density. The **B-52** (Kahlúa, Baileys Irish Cream, Grand Marnier), **Baby Guinness** (Kahlúa topped with Baileys), and **Slippery Nipple** (Sambuca, Baileys) are all built in shot glasses using the back-of-a-bar-spoon float technique.
## FAQ
**Is a shot glass the same as a jigger?**
Functionally similar. A standard 1.5-oz shot glass measures the same as a jigger's large side, but a double-sided jigger provides both measurements in one tool.
**How do you layer a B-52?**
Pour Kahlúa first (densest), float Baileys over the back of a spoon, then float Grand Marnier.
💡 Pro Tips
- Store shot glasses in the freezer for instantly chilled shots — the pre-chilled glass matters for a single-swallow drink
- Use the back of a bar spoon to layer shooters by density — heaviest (most sugar) always goes first
- A standard 1.5 oz shot glass works as an emergency measuring tool if your jigger is unavailable
- For premium spirits, a shot glass can serve as a small tasting vessel to highlight the spirit's character
⚠️ Common Mistakes
- Using shot glasses for sipping premium spirits that deserve a proper nosing glass
- Serving at room temperature when the recipe calls for a chilled shot
- Attempting to layer similar-density liqueurs that will not separate cleanly
- Overfilling beyond the rim — surface tension allows it but the result is unstable
