Daly's Bartenders' Encyclopedia by Tim Daly (1903, p.51)
| 0.5 wine glass | cognac | base |
| 1 | egg — fresh egg | base |
| 0.5 wine glass | Jamaica rum | base |
| hot milk — boiling hot milk | other | |
| nutmeg — Grate on top. | other | |
| 2 spoonfuls | sugar | sweetener |
- Add the egg, sugar, Cognac, and Jamaica rum to a mixing glass.
- Fill with boiling hot milk while stirring the contents well, grate nutmeg on top, and serve.
Garnish: Nutmeg.
Daly explicitly frames this as tonic and strengthening service, which makes it a good restorative witness.
The hot milk incorporation while stirring is the central service logic.