Prepare all ingredients.
Make a génoise, preferably into a square mold.
To make cook.
Leave to cool.
Cut a bell out of the génoise.
Heat the cream...
...and pour it on the chocolate cut in pieces.
Mix well to obtain a smooth mixture.
Leave to cool at room temperature.
Liquify the jam by slightly heating it. Brush the surface of the bell with apricot jam.
Leave to dry for a moment.
Whip the cold ganache...
...so that it fills with air, turns pale and foamy.
Using a pastry bag, line the ganache in spirale.
Just before serving, sprinkle the surface with icing sugar.
Decorate with fresh fruits.