Cream fat, sugar and salt with the whisk of the hand mixer. Stir in the eggs one by one, stirring each time until a bound mass is formed. Mix flour and baking powder, alternately stir in 125 ml milk in 2 portions
Grease a box mould (11 x 30 cm) and dust with flour. Fill 2/3 of the dough into the prepared form and smooth it down. Stir cocoa, vanilla sugar and approx. 25 ml milk into the remaining dough. Pour dark dough onto the light dough in the mould and fold in spirally with a fork. At
Take out the cake and let it rest in the mould for about 10 minutes. Carefully turn the cake onto a cake rack, turn it over and let it cool down. Dust the cake with icing sugar as desired. Whipped cream tastes good with it
Waiting time approx. 10 minutes