Separate eggs. Beat the egg whites with the whisks of the hand mixer until stiff. Sprinkle in sugar, except for 3 tablespoons. Add lemon zest and egg yolk and stir in. Mix flour, almonds and baking powder and fold in carefully. Line the bottom of a springform pan (24 cm Ø) with baking paper. Fill in the dough and smooth it down.
Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for 15-18 minutes. Let it cool down on a cake rack and take it out of the tin. Hollow out about half of the sponge cake in the middle. Leave an approx. 2 cm wide rim all around. Crumble the dough and put aside. For the filling, mix pudding powder with 2-3 tablespoons of milk. Put the remaining milk and 1 tablespoon of sugar in a pot and bring to the boil. Remove the pot from the heat and add the pudding powder while stirring. Bring to the boil again and let it cool down while stirring occasionally. Whip the cream until stiff and allow vanilla sugar to trickle in. Fold the cream and half of the dough crumbs into the almost cooled pudding and fill into the hollow of the sponge cake. Leave to set in a cool place for about 1 hour. Select, clean and wash the berries and drain well.
Remove the pot from the heat and add the pudding powder while stirring. Bring to the boil again and let it cool down while stirring occasionally. Whip the cream until stiff and allow vanilla sugar to trickle in. Fold the cream and half of the dough crumbs into the almost cooled pudding and fill into the hollow of the sponge cake. Leave to set in a cool place for about 1 hour. Select, clean and wash the berries and drain well. Halve the strawberries. Place the berries dome-shaped on the pudding filling. Mix cake glaze powder and remaining sugar in a small pot and gradually add 1/4 litre of water while stirring. Bring to the boil while stirring and spread evenly over the berries from the middle. Let it set in a cool place. Dust the edge of the cake with icing sugar and serve on a plate. Decorate as desired with mint, strawberry halves and currants
Halve the strawberries. Place the berries dome-shaped on the pudding filling. Mix cake glaze powder and remaining sugar in a small pot and gradually add 1/4 litre of water while stirring. Bring to the boil while stirring and spread evenly over the berries from the middle. Let it set in a cool place. Dust the edge of the cake with icing sugar and serve on a plate. Decorate as desired with mint, strawberry halves and currants