Raspberries selected. Cleaning, washing and stoning the cherries. Put grape juice and cherries in a large flat microwave oven. Sprinkle with cinnamon and sugar. Cover and cook for three minutes at 600 watts.
In the meantime, stir cornflour in a little cold water until smooth and stir into the cherry liquid. Add raspberries as well. Cook for another four minutes at 600 watts. In the meantime, beat egg whites, a few drops of lemon juice and vanilla sugar until stiff.
Use two teaspoons to cut off small dumplings and place them on the hot soup. Cover and cook for two minutes at lowest wattage. Then leave to stand for two minutes. Serve decorated with mint.