Updated June 2026.
A Manhattan and an Old Fashioned are two IBA cards, not two TTB types. Current IBA Manhattan: 50 ml rye whiskey, 20 ml sweet red vermouth, one dash Angostura. Current IBA Old Fashioned: 45 ml bourbon or rye, sugar cube, Angostura, water. Vermouth is a US type.21(g) aperitif wine. Typical US whiskey is 40% The Manhattan’s 50 ml at 40% is about 1.11 drinks before vermouth.
Related: rye or bourbon, sweet vermouth, Old Fashioned taste.
Two cards
| Language | Drinks at 40% |
|---|---|
| IBA Manhattan | ~1.11 whiskey |
| IBA Old Fashioned | 1.00 |
| Vermouth | Neck |
| Typical US whiskey | Read the neck |
Count both bottles in the Manhattan. Pour math: whiskey drinks.
Sources
- iba-world.com Manhattan: 50 ml rye, 20 ml sweet red vermouth, Angostura.
- iba-world.com Old Fashioned: 45 ml bourbon or rye, sugar, Angostura, water. 27 CFR 5.143 / 4.21(g). Typical 40%. NIAAA December 2025.
- is 27 CFR 4