My father-in-law is visiting us just to eat this cake! The recipe step by step

My father-in-law is visiting us just to eat this cake! The recipe step by step

Ingredients:
for the cake top:
egg whites - 6 pieces
salt - 2 g (0.07 oz)
sugar - 170 g (6 oz)
yolks - 6 pieces
flour - 130 g (4.6 oz)
cocoa - 40 g (1.4 oz)

for the cream:
sour cream - 500 g (17.64 oz)
powdered sugar - 100 g (3.5 oz)
mascarpone - 300 g (10.6 oz)
cocoa - 40 g (1.4 oz)

for decoration:
dark chocolate - 120 g (4.23 oz)
whipping cream - 20 ml (0.7 fl oz)
IN THE FRIDGE 2 H

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