Quickly knead 80 g sugar, 1 packet of vanillin sugar, flour, egg and butter in flakes to a smooth dough. Cover and chill for approx. 30 minutes. Meanwhile wash the grapes, pluck them from the stalks and let them drain. Roll out the dough thinly between 2 layers of cling film. Grease the oven pan (32 x 39 cm) and dust with flour. Place the dough plate in the pan with the help of foil. Bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 12-15 minutes until golden brown.
Remove the base from the oven, place on a cake rack and allow to cool. In the meantime, soak the gelatine. Mix quark, 100 g sugar and 1 packet of vanillin sugar. Whip the cream until stiff and chill. Warm up the wine. Squeeze the gelatine and dissolve in the warm wine. Mix with 2 tablespoons of quark, stir into the quark mixture and chill. Halve the short pastry base. Fold an edge around both halves with aluminium foil. As soon as the quark mass begins to gel, fold in whipped cream. Add grapes, up to 200 g for decoration, to the cream. Spread the cream on the base and smooth it down. Chill for 2 hours.
Mix with 2 tablespoons of quark, stir into the quark mixture and chill. Halve the short pastry base. Fold an edge around both halves with aluminium foil. As soon as the quark mass begins to gel, fold in whipped cream. Add grapes, up to 200 g for decoration, to the cream. Spread the cream on the base and smooth it down. Chill for 2 hours. Cut the cake into 20 pieces. Decorate with remaining grapes. Stir the cake glaze powder, 2 tablespoons of sugar, apple juice and 125 ml cold water until smooth. Boil up while stirring. Let cool for 1 minute and drizzle over the grapes with a tablespoon. Allow to set
Cut the cake into 20 pieces. Decorate with remaining grapes. Stir the cake glaze powder, 2 tablespoons of sugar, apple juice and 125 ml cold water until smooth. Boil up while stirring. Let cool for 1 minute and drizzle over the grapes with a tablespoon. Allow to set
waiting time approx. 2 hours