Start by making the garnish. Take a sprig of mint, strip off the leaves at the base and dip the stalk in the melted chocolate, holding the upper leaves gently. Leave to set on a plate or tray.
Fill a cocktail shaker with ice then pour in the liqueurs and cream. Shake hard until the outside of the cocktail shaker is cold, then strain in to a cocktail glass or small coupe. Garnish with the chocolate-dipped sprig of mint.