Separate eggs. Beat the egg whites, 4 tablespoons of water and 1 pinch of salt with the whisk of the hand mixer until stiff, adding 125 g of sugar at the end. Stir in the egg yolks one after the other. Mix flour, starch and baking powder, sieve over the egg mixture and fold in
Line a baking tray (approx. 30 x 38 cm) with baking paper. Pour the mixture on top and spread evenly. Sprinkle one half with Amarettini. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 10 minutes. Remove the baking tray from the oven, remove the edges from the baking tray and turn onto a work surface sprinkled with sugar. Peel off baking paper
Soak gelatine in cold water. Cut the mango from the stone. Peel and chop the flesh. Mix quark, 50 g sugar and vanillin sugar. Whip cream until stiff. Squeeze the gelatine, dissolve. Stir in 2-3 tbsp. quark, stir into the remaining quark. Fold in cream first, then mango cubes
Cut the sponge in half crosswise. Spread the quark cream on the sponge half without the Amarettini, cover with the other half so that the Amarettini are on top. Chill the cake for about 2 hours, cut into about 24 slices. Dust with icing sugar
waiting time approx. 2 hours