Drain the cranberries and collect the juice. Puree 100 g cranberries and 3 tablespoons cranberry juice. Cream fat, sugar, 1 packet of vanilla sugar and 1 pinch of salt with the whisk of the hand mixer. Stir in the eggs one by one. Mix flour and baking powder and alternately stir in 100 g whipped cream.
Halve the dough. Stir the cranberry puree into one half. Pour the dough alternately by the spoonful into a greased and flour-blown ring cake tin (2.5 litres capacity). Marble the dough with a fork. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 55-65 minutes. Take the cake out of the oven and let it rest in the form for 10 minutes. Turn the cake out of the tin and let it cool down on a cake rack (approx. 2 hours). Mix icing sugar with 1-2 tablespoons cranberry juice to a thick icing. Cover cake with icing and let it dry (approx. 30 minutes). Whip 150 g whipped cream until stiff, while pouring in 1 sachet of vanillin sugar.
Take the cake out of the oven and let it rest in the form for 10 minutes. Turn the cake out of the tin and let it cool down on a cake rack (approx. 2 hours). Mix icing sugar with 1-2 tablespoons cranberry juice to a thick icing. Cover cake with icing and let it dry (approx. 30 minutes). Whip 150 g whipped cream until stiff, while pouring in 1 sachet of vanillin sugar. Pour the whipped cream into a piping bag with a star-shaped spout and squirt tuffs onto the cake. Decorate with 1 tablespoon of cranberries