[MattRL]

Small correction, 10ml not 1ml.

Shots are also 25ml, so one shot is usually one unit.

[rplst8]

Interesting. In the US, shots are usually measured in a jigger, which is often 1.5 US fluid ounces (44 mL). https://en.wikipedia.org/wiki/Shot_glass#Sizes https://en.wikipedia.org/wiki/Shot_glass#Jigger