Updated August 2026.
A neat sip is bar method, not a TTB class. Bourbon has to be at least 51% corn, distilled at or under 160 proof, entered in new charred oak at or under 125, bottled at 40% or more. Typical US 40% 100 proof is not bottled-in-bond by itself.
Related: bourbon types, straight bourbon, how to drink mezcal.
Class vs pour
| Language | 1.5 oz drinks |
|---|---|
| Bourbon | 1.00 at 40% |
| Straight | From labeled ABV |
| Neat / rocks | — |
| 100 proof | 1.25 |
A 750 mL 40% bottle is about 17 drinks. Pour math: whiskey drinks.
Sources
- 27 CFR 5.143 / 5.88. Typical US 40%. NIAAA December 2025.
- 27 CFR 5.143; ≥40%
- is 27 CFR 5.143