Place a baking frame (35 x 24 cm) on a board. Line the bottom with 21 sponge fingers. Sprinkle with 40 ml liqueur. Soak gelatine in cold water. Drain the peaches and collect the juice. Put 3 peach halves aside for decoration, dice the rest.
Mix quark, yoghurt, sugar, vanillin sugar and 150 ml peach juice. Squeeze out the gelatine, dissolve it and mix with some quark cream. Stir everything into the remaining cream. Whip cream until stiff. Fold cream and peach cubes into the cream. Spread half of the cream on the lady fingers and smooth it down. Spread 21 ladyfingers on top. Sprinkle with 40 ml liqueur. Spread the rest of the cream on the sponge fingers and spread it loosely. Chill for about 3 hours. Loosen baking frame and cut tiramisu into pieces. Cut the peaches into slices.
Spread 21 ladyfingers on top. Sprinkle with 40 ml liqueur. Spread the rest of the cream on the sponge fingers and spread it loosely. Chill for about 3 hours. Loosen baking frame and cut tiramisu into pieces. Cut the peaches into slices. Cut 4 sponge fingers into pieces. Decorate tiramisu with peach slices, lady fingers and mint
waiting time approx. 3 hours