Julian's Recipes by Julian Anderson (1919, p.6)

0.33 drinkbrandy base
0.33 drinkMaraschino base
0.13 drinkred curacao — red Curacaomodifier
  1. Layer the maraschino, red Curacao, and brandy carefully in a small straight brandy glass.
  2. Serve after coffee.

See also: Pousse Cafe, Angel's Tit

Source says it is generally served after a cup of black coffee.