Updated April 2026.
These are two 40% whiskeys from different countries and different legal classes. Jameson is Irish whiskey (three-year Ireland floor). Jack Daniel’s Old No. 7 is Tennessee whiskey at 40% Alc. by Vol. (80 proof) on Brown-Forman’s current US product-info sheet. A 1.5-ounce pour of either flagship is one NIAAA drink. This is not a 2022 winner.
Tennessee whiskey is a US class; charcoal mellowing is the Jack process story, not an Irish rule. Related: Jameson proof, Jack proof, Jack vs Johnnie Walker.
Same drink math, different law
| Jameson | Jack Daniel’s Old No. 7 | |
|---|---|---|
| Class | Irish whiskey | Tennessee whiskey |
| US ABV used here | 40% | 40% / 80 proof |
| 1.5 oz drinks | 1.00 | 1.00 |
| Honey / Fire / Apple | — | 35% US sheet |
A 750 mL 40% bottle is about 17 drinks. Four pours are four drinks. Bonded Jack is 50% — a different SKU. Pour math: whiskey drinks.
Sources
- Brown-Forman US Product Info: Jack Daniel’s Tennessee Whiskey 40% (80 proof). Honey/Fire/Apple/Blackberry 35%. Bonded 50%.
- Jameson 40% — prior official nutrition. Irish ≥3 years / ≥40%.
- TTB 27 CFR 5.143 (whiskey). NIAAA December 2025.