Sponge cake:
4 eggs
sugar 100 gr
a pinch of salt
starch 20 gr
flour 65 gr
baking powder 1 tsp
cocoa 25 gr
Diameter 18cm
Cream ganache:
whipping cream 500 gr
dark chocolate 200 gr
Filling:
prunes 150-200 gr
brandy
Syrup for impregnation
sugar 100 gr
water 100 gr
brandy