How to make:
SHAKE all ingredients with ice and fine strain into chilled glass.
Dust with chocolate powder
Slightly sweet, very creamy - drink after dinner.
Created in London during 1922 by Scottish bartender Harry MacElhone to celebrate H.R.H. Princess Mary's marriage to Lord Lascelles. The original recipe featured equal parts of all three ingredients: 1/3 gin, 1/3 white crème de cacao and 1/3 fresh cream. The year after, Harry MacElhone purchased his eponymously named bar in Paris.
There are approximately 240 calories in one serving of Princess Mary.