Cut the marzipan into pieces. Mix marzipan and egg white with the whisk of the hand mixer to a smooth dough. Add sugar, vanillin sugar and salt and stir in. Sift flour on top and mix.
Pour the dough into a piping bag with a medium perforated spout and squirt 8 eggs (approx. 10 cm in size) onto a baking tray lined with baking paper, sprinkle with almonds and press down lightly. Bake the eggs in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 15-20 minutes until golden brown.
Let it cool down on a cake rack. Chop both types of couverture and melt separately in a bain-marie over a mild heat. Dip the eggs into the couverture or spray fine lines onto the eggs. Leave to dry on a cake rack.