Separate eggs. Beat the egg whites in a large mixing bowl until stiff, chill. Whip egg yolks, vanilla sugar and sugar until light creamy. Stir in almonds, cinnamon, lemon and orange peel. Carefully fold in the egg white. Grease a springform pan (26 cm Ø). Pour in the egg and almond mixture, smooth it down and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 50-60 minutes (test with sticks). Finally cover with aluminium foil if necessary
Divide the almonds in halves. Heat the oil in a small pan. Roast the almonds brown over medium heat while turning them, take them out, let them cool down and chop them roughly
Remove the mould from the oven. Use a knife to remove the cake from the edge of the mould and let it cool down. Remove the cake from the mould, dust with plenty of icing sugar and serve sprinkled with almonds
Waiting time approx. 1 hour