For the shortcrust 200 g flour, 100 g icing sugar, vanilla sugar, 1 pinch of salt, egg and butter in pieces first with the dough hooks of the mixer, then briefly knead with your hands to a smooth dough.
Cover the dough and chill for about 45 minutes.
Line two baking trays with baking paper. Preheat the oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Roll out the dough to a thin layer of flour approx. 3 mm thick. Use the cutters to cut out small and large strawberry biscuits.
Knead the dough again and again, roll out again and cut out. Place the cookies on the baking trays and bake them one after the other in a hot oven for about 8 minutes. Take them out and let them cool down.
For the icing, sieve 250 g icing sugar into a bowl. Mix with lemon juice and 2-3 tablespoons of water to make the icing. Remove 2 tablespoons of icing and colour it green. Remove 1 tablespoon of the white icing and colour it light red.
Colour the rest of the cast in bright red.
Brush the biscuits evenly with the red icing using a brush and allow to dry. Put the green and light red icing in a freezer bag or piping bag and close them. Cut a small corner off the bags.
Paint small dots on the biscuits with the green icing and the light red icing. Let the biscuits dry for about 1 hour.