About Town Cocktail Book by Joe Fitchett (1925, p.24) — About Town 1925
| 1 portion | rye whiskey — Rye | base |
| 1 portion | French vermouth — French Vermouth | modifier |
| 1 portion | Italian vermouth — Italian Vermouth | modifier |
- Mix with ice to taste and serve.
Ice: Ice to taste
This matters because it preserves a social-book equal-parts rye-and-vermouth branch close to the Manhattan field.
The source gives only ingredients and ice, so the service is preserved conservatively.