How many ml in nip of whiskey?

A "nip" of whiskey is generally considered to be 50ml.

However, it's important to note that:

* The size of a "nip" can vary. Some may use smaller or larger amounts than 50ml, so it's always a good idea to check the label or ask for clarification.

* The term "nip" can also refer to a small bottle containing a specific amount of whiskey. These typically hold 50ml or 100ml.

It's best to be specific when referring to the amount of whiskey you want to use. For example, instead of saying "a nip," say "50ml of whiskey" to avoid confusion.