Preparation:
1. In the bowl of your stand mixer, mix the flour, sugar, salt, eggs, flavoring and the milk and baking powder mixture.
2. Then add the butter cut into cubes little by little and knead for 15 minutes.
3. Place the dough in a greased bowl and let rise for 2 hours at room temperature.
4. Roll out the dough, place it in a cake tin and let it rest for 40 minutes.
5. Brush the surface with egg yolk and milk and decorate with granulated sugar.
6. Bake at 180 ° for 20 minutes.
7. For the cream: beat the eggs with the sugar, then add the cornstarch and hot milk.
8. Bring the mixture to the heat and let it thicken.
9. Mix the butter and the hydrated and well-squeezed gelatin. Finally, add the cream.
10. Cut the cake, moisten it and fill it using the piping bag.
