Separate eggs. Beat the egg whites until stiff, adding 100 g sugar, 1 packet of vanillin sugar and salt. Stir in the egg yolks. Mix starch, flour and baking powder, sieve on top in portions and fold in. Line the bottom of a springform pan (26 cm Ø) with baking paper. Fill in sponge cake mixture and smooth it down. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes. Remove from the oven, place on a grid, remove from the edge of the springform pan and allow to cool. Meanwhile wash the strawberries, clean 750 g and puree.
Remove the base from the mould. Cut the base 2x horizontally. Measure 500 ml, put into a pot and mix with 50 g sugar. Stir red fruit jelly powder and 6 tablespoons of water until smooth. Bring the strawberry puree to the boil and stir in the mixed powder, bring to the boil while stirring, simmer for 1 minute at low heat. Place the base on a cake plate, close the cake ring tightly around it. Spread the strawberry jelly evenly on top. Place the second cake layer on top. Put it in a cold place. Soak gelatine in cold water. Mix yoghurt, lemon juice, remaining strawberry puree, 50 g sugar and 1 packet of vanilla sugar. Whip 100 g cream with the whisks of the hand mixer until stiff. Squeeze the gelatine. Dissolve in a small pot at low heat. Stir 3-4 tablespoons of yoghurt drop by drop into the gelatine. Then slowly stir into the remaining yoghurt. Place in a cool place until the mixture begins to gel. Fold in 2 portions of cream.
Soak gelatine in cold water. Mix yoghurt, lemon juice, remaining strawberry puree, 50 g sugar and 1 packet of vanilla sugar. Whip 100 g cream with the whisks of the hand mixer until stiff. Squeeze the gelatine. Dissolve in a small pot at low heat. Stir 3-4 tablespoons of yoghurt drop by drop into the gelatine. Then slowly stir into the remaining yoghurt. Place in a cool place until the mixture begins to gel. Fold in 2 portions of cream. Pour the mixture onto the base, smooth it down, place the lid on top and chill the cake for about 2 hours. Grind the pistachios finely in the universal chopper. Remove the cake from the cake ring. Whip 400 g cream until stiff, pour in 1 sachet of vanilla sugar. Spread the cream loosely all around the cake. Refrigerate the cake again for about 1 hour. Clean and halve the remaining strawberries. Sprinkle the edge with the pistachios. Cover the surface with the remaining strawberries and serve decorated with lemon balm and lemon spiral
Pour the mixture onto the base, smooth it down, place the lid on top and chill the cake for about 2 hours. Grind the pistachios finely in the universal chopper. Remove the cake from the cake ring. Whip 400 g cream until stiff, pour in 1 sachet of vanilla sugar. Spread the cream loosely all around the cake. Refrigerate the cake again for about 1 hour. Clean and halve the remaining strawberries. Sprinkle the edge with the pistachios. Cover the surface with the remaining strawberries and serve decorated with lemon balm and lemon spiral
4 hours waiting time