Cut butter into cubes. Knead the sugar, butter, flour, gingerbread spice, almonds and egg first with the dough hooks of the hand mixer, then with your hands to a smooth dough. Wrap the dough in foil and chill for about 30 minutes. Roll out the dough 2-3 mm thin on a floured work surface and cut out biscuits with various cutters (e.g. car, plane, boat).
Line 2 baking trays with baking paper. Spread the biscuits over them. Bake the trays one after the other in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 10 minutes. Let the cookies cool down. Beat egg white until semi-solid. Add icing sugar and stir until smooth. Spread the icing on 5 bowls. Colour 1 icing each red, blue, yellow and green. Fill each icing into a freezer bag and cut off a small corner.
Beat egg white until semi-solid. Add icing sugar and stir until smooth. Spread the icing on 5 bowls. Colour 1 icing each red, blue, yellow and green. Fill each icing into a freezer bag and cut off a small corner. Decorate cold cookies with icing and let them dry for about 1 hour
waiting time approx. 1 1/2 hours