Café Royal Cocktail Book by W. J. Tarling (1937, p.232)

0.33 partcognac — Cognacbase
0.33 partCordial Médoc base
3 dashMaraschino liqueur — Maraschinomodifier
champagne — Fill up with Champagneother
0.33 partCointreau other
  1. Shake, pour into a tumbler, and fill up with Champagne.

Invented by Leo Schwabl.