Cream fat, salt, vanillin sugar and sugar. Stir in the eggs one after the other. Mix flour and baking powder. Alternately stir in with the milk. Line the bottom of a springform pan (26 cm Ø) with baking paper, fill in the dough and smooth it down.
Bake in the preheated oven (electric: 175 °C/ gas: level 2) for about 20 minutes. Let the base cool down in the mould. Drain the apricots. Halve melon, remove seeds and cut out flesh with a ball cutter.
Whip the cream in portions until stiff. Put cream powder in a bowl. Add orange juice and 100 ml water. Mix everything with a whisk for about 1/2 minute. Stir in about 4 tablespoons of cream.
Fold in the remaining cream. Spread the apricots and half of the melon balls on the sponge base. Spread the cream on top and chill for about 3 hours. Wash, halve and stone the nectarines.
Cut the fruit into slices. Decorate the cake with the rest of melon, nectarines and possibly lemon balm. Makes about 16 pieces.