Separate the eggs. Beat the egg whites with the water until stiff - at the same time add 75 g sugar. Fold in the egg yolks. Sift the flour, starch, baking powder and cocoa over the egg yolks and fold in. Put them into a springform pan and bake at 175 ° convection oven for about 20 - 25 minutes.
Let it cool down. Place a cake ring around the base.
Soak 4 sheets of gelatine in cold water for about 10 minutes. 1/2 l cream with 1 p. van. Whip sugar until stiff. Dissolve the gelatine. First stir about 2-3 tbs. of cream into the gelatine. Then stir everything into the cream.
Spread the whole thing on the floor - chill for about 30 minutes.
Puree the strawberries with 4 tablespoons of sugar and the lemon juice. Whip 1/4 l cream until stiff. Soak 5 sheets of gelatine, dissolve and stir into the cream. Fold in the strawberry puree as well. Spread on the cream layer.