Mix the flour with the baking powder, add the 200 g sugar, butter and one egg and make a kneading dough.
Roll out the dough on a baking tray and prick several times with a fork.
Separate the 4 eggs. Beat the egg whites with 1 tablespoon of cold water until very stiff. Mix the remaining ingredients with the egg yolks and fold in the egg whites.
Spread the mixture on the dough. Top with tangerines.
Bake at 175 ° C for about 45 minutes.
After cooling, a clear cake topping (2 packets) can be poured over it.