For the tiramisu cake, first prepare the base. To do this, separate the eggs, beat the 2 egg yolks and about two-thirds of the confectioners’ sugar with a hand mixer until fluffy, add the oil and water.
Continue mixing until you get a very foamy mixture. Beat the egg whites with a pinch of salt until fluffy, then beat with the remaining powdered sugar until stiff.
Mix flour with baking powder and fold into the yolk mixture. Finally, carefully fold in the beaten egg white. Put this mixture into a cake pan with a diameter of 26 cm and bake at 170 degrees (preheated) for about 30 minutes.
For the cream, first prepare the pudding according to the instructions, but with 1/4 liter of milk. This makes a slightly thicker pudding. Set aside and keep stirring so it doesn’t form a skin.
Boil coffee, chill and add a little rum. Mix curd, sugar and cognac vigorously with a mixer for 5 minutes. Stir in the pudding while it is still lukewarm.
Whip the whipped cream until stiff and carefully fold into the custard-curd mixture. Put a ring around the cake base, start with the cream and layer alternately with the biscuits dipped in coffee.
Sprinkle with cocoa before serving.