Separate eggs. Beat the egg whites until stiff, add 75 g sugar and vanillin sugar. Fold in egg yolk. Mix flour, starch and baking powder and fold in. Spread the dough on a baking tray (35 x 40 cm) covered with baking paper. Bake in a hot oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for 15-25 minutes
Heat the jam. Turn the sponge onto a tea towel, remove the paper immediately and coat the sponge with jam. Roll up lengthwise and allow to cool. Cut into 18 slices. Form edge
(26 cm Ø) onto a cake plate. Place slices on the edge and on the base
Soak the gelatine. Drain the apricots, measure 175 ml of juice. Dice apricots, except for 10 pieces. Mix mascarpone, yoghurt, liqueur, juice and 75 g sugar. Squeeze gelatine, dissolve, stir in. Fold in the fruit cubes. Pour into the mould. Cool for 3 hours. Decorate with cream tuffs, pistachios and apricots