In a narrow, deep bowl, break the eggs and add the peeled and cut mandarin.
Mix everything for a long time with a stick mixer so that the mandarin is chopped as well as possible.
Pour the resulting mixture into a strainer and strain into a larger container.
Add sugar and briefly mix with a whisk.
Then pour in the oil and water and mix again briefly by hand.
Add all purpose flour, salt and baking powder, then mix.
Grate the peel of one tangerine and add it to the mixture.
Mix everything well.
Prepare a 10 x 10 inches baking pan.
Lightly oil it and distribute the oil.
Place the cut-out baking paper on the bottom, and cover the walls with flour.
Also, spread the sugar on the bottom.
Peel 8 tangerines and cut them in half.
Place the cut mandarins with the cut side at the bottom of the baking dish.
Then cover the fruit with the biscuit mixture.
The cake is baked in an preheated oven at 356 Fahrenheits for 40 minutes.
When the cake is baked, let it cool for a few minutes.
Then trim it with a knife, turn it over and remove the mold.
If necessary, remove the excess dough from the tangerines with a knife for a nicer appearance.
If desired, it can be sprinkled with powdered sugar.