Updated April 2026.
The IBA Manhattan already names the bitters: one dash of Angostura. The rest of the card is 50 ml rye whiskey and 20 ml sweet red vermouth, stirred, cherry garnish. Peychaud’s, orange bitters, or a split-dash house build are legal drinks — they are not the IBA Manhattan. A dash is a milliliter-scale dose (bar tests vary; not TTB). The ethanol that matters is the rye and vermouth. This is not a 2023 ranking of 15 bottles.
Sweet vs dry vermouth changes the drink more than swapping aromatic bitters. Related: whiskey for a Manhattan, bourbon Manhattan, sweet vs dry vermouth, how much is a dash.
What the card actually uses
| Bottle | Role |
|---|---|
| Angostura aromatic | IBA dash. The named bitter |
| Peychaud’s | Sazerac / house Manhattan — not the IBA card |
| Orange bitters | Optional house split; not IBA |
| Rye 50 ml (IBA) | ~1.13 drinks at 40%; more at 50% |
| Sweet vermouth 20 ml | Label 15-18% typical — small extra ethanol |
An IBA Manhattan at 40% rye is a little over one drink before vermouth. Four of them are past four drinks. NIAAA binge pattern is a health line, not a target. Hours to buy bitters follow the same ABC clock as the whiskey in that state. No invented MSRP. Pour math: whiskey drinks.
Sources
- IBA Manhattan: 50 ml rye, 20 ml sweet red vermouth, 1 dash Angostura.
- Dash volume is bar-test folklore, not TTB (see dash page).
- NIAAA December 2025. No 15-bitter ranking.