I was told that recently, someone came into the restaurant bar and ordered a very unusual flavor combination. He wanted equal parts Maraschino Liqueur, Chartreuse and an egg, shaken and served over ice. The drink had a name, Chocolate Cocktail. To everyone's surprise, the drink was delicious, and did indeed taste like chocolate.
I found a recipe for a Chocolate Cocktail (No. 1) in the Savoy Cocktail Book.
Chocolate Cocktail (No. 1)
1Tsp Powdered Chocolate
1 Liqueur Glass Maraschino
1 Liqueur Glass Yellow Chartreuse
Shake well and strain into large glass.
Chocolate Cocktail (as ordered by patron)
1 1/2 oz Maraschino
1 1/2 oz Green Chartreuse
Shake well and strain over ice.
Notes: As the name suggests, this is a desert drink resembling an adult chocolate milkshake. I used Green chartreuse which was delicious, but to mellow out the anise notes, I would suggest Yellow Chartreuse. Because of its viscosity, I served it over ice.