1.
Put the vanilla sugar into 800 ml of milk and bring it to the boil.
2.
Separate the egg yolks from the whites and mix the egg yolks with 3 spoons of sugar and 1 spoon of pudding powder. Then add 200 ml of cold milk and stir until it's smooth.
3.
Beat the egg whites and add add one pinch of salt.
4.
When the milk is boiling, take spoonfuls of beaten egg whites and dip them into it. Thus the floating egg-white islands will be firmer.
5.
Then take them out on a plate.
6.
Add the egg yolk mixture to the boiling milk, and lower the heat. Simmer for a few minutes.
7.
Remove from the fire and gently place the beaten egg white 'islands' on top of the vanilla milk.
8.
Grate lemon peel of chocolate on top. Serve cold.