Mix the butter and sugar until foamy and gradually add the eggs. Add iodized salt and rum. Stir in the flour sifted with baking powder and the milk. Divide the dough into two halves, place the light part in the greased cup cake pan, add the nougat cream and cocoa under the other half. Then place this dough on the light-colored dough and pull it through in a spiral with a fork.
Bake in a preheated oven at 175 ° C top / bottom heat (convection: 150 ° C) for about 60 minutes.
Dust the cake with powdered sugar or cover it with chocolate.