Beat the egg whites and lemon juice with the whisks of the hand mixer until stiff. Gradually add salt, vanillin sugar and sugar. Beat until the sugar has dissolved and the mixture is shiny. Mix 80 g ground almonds with aniseed and fold in. Pour the egg white mixture into a piping bag with a perforated spout.
Spray croissants onto two baking trays lined with baking paper. Sprinkle with 20 g almonds. Bake in a preheated oven (electric cooker: 150 °C/ convection oven: not suitable/ gas: level 1) for approx. 15 minutes. Let them cool down