For the vanilla sauce, remove 11/2 tablespoons of the milk and mix with the sauce powder. Put the remaining milk and sugar in a pot and bring to the boil. Remove the pot from the heat and stir in the sauce powder with a whisk. Bring to the boil again while stirring. Let it cool down in a cool place. For the chocolate cream, pour milk and cream powder into a mixing bowl and stir briefly with the whisks of the hand mixer on the lowest setting.
Then whisk at highest setting for approx. 3 minutes until creamy. Pour cream and cooled vanilla sauce into dessert glasses and chill for approx. 20 minutes. Wash the mint and dab dry. Pluck the leaves from the stalks and, except for a few for decoration, cut into fine strips. Before serving, sprinkle the vanilla sauce with the mint strips and decorate with mint leaves. Serve with wafer rolls