Proof

Definition:
Proof is a measure of the alcohol content in a beverage. In the United States, proof is calculated as twice the ABV (Alcohol by Volume). For example, a spirit with 40% ABV is 80 proof.

In Context:
Proof is commonly seen on liquor labels and is especially relevant when comparing the strength of spirits. While ABV is the industry standard for precise measurement, “proof” remains a familiar shorthand for gauging potency, particularly in front-of-house settings or with certain suppliers. Understanding proof helps bar managers make informed decisions about portion sizes, liability, and cost control.

Pro Tip:
Don’t assume a higher-proof spirit automatically increases pour cost. In fact, some Spec users intentionally feature high-proof products in low-volume specs (like stirred classics) to boost profit margins while delivering bold flavor.

Example:
A bottle of overproof rum might list an ABV of 57.5%, making it 115 proof. This affects dilution, guest perception, and potentially even licensing compliance in some states.

Related Terms:

• ABV

• Overproof

• Standard Drink

• High-Proof Spirits