Peychaud's New Orleans Cocktails by John Held Jr. (1935, p.16)

1 ouncelemon juice — Lemon Juiceacid
2 ouncesdry gin — London Dry Ginbase
1 teaspoonfulsugar — Sugarbase
Soda water — Charged Waterdilution
1 unitegg yolk — Egg yolkother
  1. Shake well with ice, strain into a fizz glass, add charged water to fill, and serve.

Ice: Ice

The booklet says the Southern version is served with cream or milk.