Wash and drain the sour cherries. Pluck the stalks and remove the stones. Wash lemon hot and rub dry. Peel the peel spirally thin and squeeze out the juice.
Bring cherry nectar, 1/4 l water, cinnamon stick, lemon peel and juice to the boil. Add the cherries and simmer at low heat for about 5 minutes. Remove the cinnamon stick and lemon peel.
Stir starch with a little water until smooth. Stir into the cold dish with a whisk and bring to the boil again briefly. Season cold dish with sugar and vanilla sugar. Keep cold for about 1 hour.
Coarsely crumble the meringue shells. Arrange the cherry peel in deep plates. Place the meringue shells on top and serve immediately.