I created this drink about 7 years ago, after my friend, Ed, gave me a shot of white chocolate cream liquor. It was AWESOME! but me, being me, had to add mint. Once again I am guessing at amounts, as I just pour the chocolate until the glass is nearly full, then add the mint. I use a glass from a set we bought that is made for serving Bailey's. Filled to the brim the glass holds 85 ml.
What you need: Creme de Menthe liqueur, and a white chocolate cream liquor such as Godiva.
In a small fancy liqueur glass pour 75 ml of the chocolate liquor. Add <10 ml of Creme de Menthe slowly, allowing the two liquids to swirl and give the marbled effect. Tastes so good!