Cream warm fat, 100 g icing sugar, vanillin sugar, salt and cinnamon with the whisk of the hand mixer. Add the eggs one by one and stir in. Mix flour, nuts, baking powder and cocoa and stir into the egg-fat mixture in portions.
Cover the dough and let it rest in the refrigerator for at least 1 hour. Cover 2 baking trays with baking paper. Form walnut-sized balls from the dough with lightly floured hands and place them on the baking trays with some space between them.
Bake in the preheated oven (electric oven: 175 °C/ gas: level 2) for approx. 12 minutes one after the other. Leave to cool on a cake rack. Sieve the remaining icing sugar and stir into 4 tablespoons of water until smooth.
Put a blob on each of the chocolate nuts. Press the chocolate lentils into the moist icing and allow to dry. Results in about 45 pieces.