American and Other Drinks by Leo Engel (1878, p.97)

0.22 portioncuracao — curagoabase
Angostura bitters — few dropsbitter
0.22 portionMaraschino liqueur — maraschinomodifier
0.22 portionnoyeau — equal third of the prepared mixturemodifier
1 whiteegg white — egg white frothother
1 yolkegg yolk — float unbrokenother
  1. Fill a straw-stem port-wine glass two-thirds full of the mixed liqueurs, float the unbroken yolk, build froth from the whisked white on top, and dash with bitters.

Source gives ceremonial drinking directions; this is the originator's house version.