Cocktails Bar La Florida by Constante Ribalaigua Vert (1934, p.167)

0.33 partcreme de cacao base
0.33 partgin — Gordon ginbase
0.33 partmilk — sweet milkdilution
0.17 partCointreau other
0.5 teaspoonsugar sweetener
  1. Shake well with plenty of ice and strain.

Ice: Plenty ice