Separate eggs. Beat egg whites until stiff. Gradually add sugar, 1 packet of vanillin sugar and salt. Fold in the egg yolk. Mix flour and starch and fold into the egg mixture.
Pour the sponge mixture into a piping bag with punched spout and squirt 5 circles (10-11 cm Ø) each onto 2 baking trays covered with baking paper. Bake the trays one after the other in a preheated oven (electric cooker: 225 ° C/ convection oven: not blessed/ gas: level 4) for 8-10 minutes.
Take out and turn over onto a damp tea towel with the baking paper facing upwards. Brush the baking parchment with water and remove carefully. Cover omelettes with a 2nd damp tea towel and let them cool down.
In the meantime whip the cream until stiff. Stir in crème fraîche, remaining vanillin sugar and lemon peel. Pour the cream mixture into a piping bag with perforated spout and fill the omelettes with it. Put raspberries into the omelettes, dust with icing sugar and decorate with pistachios.
Arrange on a plate.