For the cake base, mix espresso and amaretto. Dip the sponge fingers completely into the mixture and place them tightly together in a square mould (approx. 20 x 25 cm).
For the cream, wash, clean or sort 400 g berries. Halve or quarter the strawberries. Stir the quark, mascarpone, sugar and vanilla sugar with the whisk of the mixer until smooth. Fold the prepared berries into the cream.
Spread on the lady fingers and smooth them down. Chill for about 2 hours.
Remaining berries wash, clean or select. Cut strawberries smaller. Dust the berry tiramisu cake with cocoa shortly before serving and decorate with the remaining berries.