A delicious recipe for David Caradine, with dark creme de cacao, green creme de menthe, Black Velvet® Canadian whisky and heavy cream. Also lists similar drink recipes.
1 part dark creme de cacao
1 part green creme de menthe
1 part Black Velvet® Canadian whisky
1 part heavy cream
Mix in the order: cacao, menthe, whiskey, milk. Try to keep the layers separate. Float on the back of a spoon, tilt the glass and pour very gently, etc.
I suggest tilting the glass. When you tilt the glass you can, when pouring the cream/milk, rotate the glass causing the cream to swirl down through the other layers which looks good. Serve in an apertif glass.