Separate eggs. Beat the egg whites and 4 tablespoons of cold water until stiff. Finally, gradually add 125 g sugar. Then fold in egg yolk and lemon peel. Mix flour, cornstarch and baking powder, sieve onto the egg foam and fold in carefully. Put the dough on a baking tray (approx. 37x32 cm) lined with baking paper and smooth it down.
Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 12 minutes. Sprinkle a clean tea towel with sugar. Use a knife to remove the sponge cake from the edge, turn onto the tea towel and carefully remove the baking paper. Cut an 11-12 cm wide strip from the narrow side of the sponge cake, so that the rest of the cake is still 25 cm long and 30 cm wide. Let the sponge cake cool down. In the meantime, wash the strawberries, drain well and clean them. Halve the strawberries. Place the large sponge cake plate on a board or tray and cover it with strawberries close together. Crumble the sponge cake strip. Put mascarpone, sour cream, vanilla sugar and remaining sugar in a mixing bowl. Whip with the whisk of the hand mixer for about 4 minutes until stiff, and finally pour in the cream firming agent. Spread the cream on the strawberries and repaint the edge with a damp knife.
Halve the strawberries. Place the large sponge cake plate on a board or tray and cover it with strawberries close together. Crumble the sponge cake strip. Put mascarpone, sour cream, vanilla sugar and remaining sugar in a mixing bowl. Whip with the whisk of the hand mixer for about 4 minutes until stiff, and finally pour in the cream firming agent. Spread the cream on the strawberries and repaint the edge with a damp knife. Sprinkle with sponge crumbs and put the plate in a cool place for 5-6 hours. Roast the flaked almonds in a pan without fat and let them cool down. Cut the plate into about 15 slices (5x10 cm). Sprinkle with almond flakes and icing sugar. Arrange on a plate and decorate with mint or balm. Results in about 15 slices
Sprinkle with sponge crumbs and put the plate in a cool place for 5-6 hours. Roast the flaked almonds in a pan without fat and let them cool down. Cut the plate into about 15 slices (5x10 cm). Sprinkle with almond flakes and icing sugar. Arrange on a plate and decorate with mint or balm. Results in about 15 slices