Separate 4 eggs. Fat, 125 g sugar and vanillin sugar, 1 pinch of salt and 1 pckch. Cream lemon zest. Stir in 4 egg yolks and 1 egg separately. Mix flour and baking powder, alternating with milk
Beat 4 egg whites and 1 pinch of salt until stiff. While stirring constantly, pour in 200 g sugar. Keep beating until the sugar is completely dissolved. Spread half the dough into a greased springform pan (26 cm Ø). Spread half of the beaten egg white on top and sprinkle with 1 tbsp. almonds. Bake in a hot oven (electric cooker: 175 °C / convection oven: 150 °C/ gas: level 2) for 20-25 minutes. Bake the rest of the dough, beaten egg white and almonds in the same way. Let both bases cool down
Whip the cream and cream firmer until stiff, adding 1 tablespoon of sugar and the rest lemon zest. Fold in liqueur and juice. Spread the cream on a base. Place the second base on top and dust with icing sugar. Decorate the cake if necessary