Pour the mandarins into a colander and drain well.
Beat the eggs in a bowl until frothy, sift the flour and baking powder, add sugar, oil and juice and stir to a smooth batter. Spread the batter on a baking sheet. Spread the tangerine pieces on top.
Mix the desiccated coconut with the vanilla sugar and sprinkle over the cake.
Bake the cake in the preheated oven at 170 ° C for 30 minutes. When the cake comes out of the oven, immediately sprinkle a mug of whipped cream on it.