Soak raisins in rum for 2-3 hours. Roast the nuts in a preheated oven (electric cooker: 150 °C/ convection oven: 125 °C/ gas: see manufacturer) for 10-15 minutes. Remove the finished nuts, let them cool down and grind half of them finely in the universal chopper
Cream fat, vanilla sugar, salt and sugar with the whisk of the hand mixer. Stir in the eggs one by one. Mix flour and baking powder and stir alternately with 100 ml milk into the fat-sugar mixture. Halve the dough, fold the rum raisins into one half. Stir hazelnuts and 2 tbsp. milk into the other half.
Grease a box form (30 cm long, 2 3/4 litres capacity) and dust with flour. Pour the dough into the box form and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 1 1/4 hours (stick test). Cover the cake with aluminium foil if it gets too dark. Remove the cake from the oven, let it cool down for about 15 minutes and then turn it out of the tin. Let it cool down on a cake rack. Dust the cake with icing sugar and cut into slices
waiting time approx. 2 hours