Separate eggs. Beat the egg whites and 3 tablespoons of water with the whisk of the hand mixer until stiff, adding 100 g sugar. Beat the egg yolk and bitter almond oil into it. Mix the flour, 40 g starch and baking powder, sieve onto the egg foam.
Add the almonds and carefully fold in. Line the bottom of a springform pan (26 cm Ø) with baking paper. Fill in sponge cake mixture and smooth it down. Bake in the preheated oven (electric: 175 °C/ gas: level 2) for 25-30 minutes.
Let the sponge cake cool on a cake rack, remove from the mould and cut through once. Place a cake ring around the lower cake base. Drain the cherries on a sieve and collect the juice.
Stir the rest of the cornflour and about 6 tablespoons of cherry juice until smooth. Boil up the rest of the juice, lemon peel and 2 tablespoons (30 g) of sugar. Stir cornflour into the boiling juice, bring to the boil again briefly and remove the lemon peel.
Fold in the cherries. Remove 6-8 nice cherries and put aside. Spread the stewed cherries evenly on the lower sponge cake base. Let it cool down. Mix mascarpone, quark, 50 g sugar and vanillin sugar well.
Put mascarpone cream on the cherries and smooth it down. Cover with the top sponge cake and refrigerate for about 1 hour. In the meantime chop the pistachios finely. Whip cream and remaining sugar until stiff.
Put approx. 1/3 of the cream in a piping bag with a large perforated spout. Remove the cake from the cake ring and spread the remaining cream all around. Decorate with thick cream tuffs. Sprinkle the cake and tuffs with pistachios.
Tuffs alternate with the remaining cherries and jelly bells. Decorate the centre of the cake with marzipan bunnies and lemon balm leaves as desired. Makes about 12 pieces.