Soak 8 and 3 gelatine leaves separately. Place the sponge cake base on a cake plate and surround with a springform pan rim. Separate the eggs. Mix cream cheese, egg yolk, yoghurt, lemon peel, lemon juice and sugar.
Squeeze a larger amount of gelatine, dissolve and fold into the cream. Beat egg whites until stiff and fold in. Spread half of the cream on the sponge cake base and allow to set in the freezer for about 30 minutes.
Heat the jelly and liqueur, squeeze out the remaining gelatine and dissolve in it. Allow to set a little and spread on the cream. Sprinkle with pistachios. Spread the rest of the cream over it and smooth it down.
Put the cake in the refrigerator for about 2 hours. Crumble the meringue shells. Decorate cake with berries and meringue. Makes about 12 pieces.