Wash, clean and halve the plums and remove stones. For the icing, stir cream, sauce powder and 50 g sugar until smooth. Stir in 2 eggs. For the dough, whip the fat and 200 g sugar until creamy with the whisk of the hand mixer.
Add 4 eggs one after the other and stir in. Mix flour and baking powder. Stir the flour mixture into the egg-fat mixture by the spoonful. Stir in rum.
Pour the dough into a greased and flour-spread springform pan (26 cm Ø). Spread the plums evenly on the dough and press them in slightly. Spread the icing over them. In a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see
manufacturer) bake for about 45 minutes.
Take out the cake, let it cool down on a cake rack. Remove from the mould and cut into pieces. Dust with icing sugar and cut into pieces. Whipped cream tastes good with it.