Soak gelatine in cold water. Heat rosé wine, 70 g sugar, lemon peel and lemon juice over low heat while stirring until the sugar is dissolved. Remove lemon peel. Squeeze the gelatine. Dissolve in wine while stirring
Pour wine into an angular mould (approx. 12 x 20 cm) and allow to set for at least 6 hours, preferably overnight
Stir the sauce powder, 2 tablespoons of sugar and 4 tablespoons of milk until smooth. Boil up the rest of the milk and thicken with sauce powder. Let cool off
Whip cream until semi-stiff, stir into the sauce. Dip the mould briefly in hot water. Turn out the jelly and cut into cubes. Divide with the vanilla cream into 4 dessert glasses. Decorate with lemon and mint