For the beginning, prepare the top, mix the egg whites in a bowl, in another bowl mix the yolks with the sugar and gradually add the oil, until they become frothy, add the vanilla, wheat and potato flour, the powder. baked, mix vigorously without leaving lumps, finally add the beaten egg whites, from the top up until the composite becomes homogeneous. The composition is placed in a round, lined tray, put in the oven (preheated) at 180 ° for 20 minutes (try with a toothpick if it is ready). Remove the top after a few minutes and leave to cool until use.
Cream 1: Put a small saucepan with water on the stove, put 2-3 tablespoons of liquid cream in a bowl, put it on the steam bath, wait for it to heat, add the chocolate pieces and melt, mix the remaining cream and mix well and when the chocolate has cooled, incorporate it to form a chocolate cream.
Cream2: You can use a vanilla cream (commercial) or you can prepare a pastry cream of 100 ml milk, vanilla, lemon peel, 1 egg, 1 tablespoon cornstarch (rice flour) 2 tablespoons sugar, boil milk with vanilla and lemon peel, in a bowl mix the egg with sugar and flour, pour over the warm milk and bring to a boil, stirring constantly until you get a creamy consistency (remove the lemon peels from the milk). The very well cooled cream mixes well with the whipped cream. Leave to cool until use.
Syrup: boil water and sugar for a few minutes, then add the vanilla essence and let it cool.
The very well cooled top is cut into 3 parts, the first part is placed on the plate, syruped to taste, a layer is formed with the cherry jam (not too thick, put about half of chocolate cream, add another part of the top syrup, lightly grease with a little cream, cut thin banana slices, place evenly, put the rest of the cream on top, finish with the last part of the countertop, top with the remaining chocolate cream, garnish to taste, leave to cool for a few hours.