"Heaven" Cake ✧ Himmelstorte

For the layers:
4 eggs
100 g of butter
125 g of all-purpose flour
300 g of sugar
30 g of milk
8 g vanilla extract
0.5 tsp of baking powder
80 g of almonds
For the cream:
300 g of berries
50 g of sugar (or taste)
30 g of starch (if needed)
500 ml of heavy whipping cream (the original recipe calls for 250 ml)
50 g of icing sugar (or to taste)
0.5 tsp of vanilla extract
A springform pan is 26 cm in diameter
The cake is 1.6 kg