Jack's Manual by J. A. Grohusko (1910, p.82)

0.1 portionbrandy base
0.9 portiongreen creme de menthe base
  1. Pour the green creme de menthe and brandy into a liquor pony glass.
  2. Serve.

Café Royal Cocktail Book by W. J. Tarling (1937, p.200)

0.25 partlemon juice — Lemon Juiceacid
0.5 partgin — Dry Ginbase
0.25 partcreme de menthe — Crème de Menthemodifier
  1. Shake and strain.

Lineage reconciliation

See also: Pousse L'Amour, Sam Ward

Source calls it a delicious after-dinner cordial.