Grind the pine nuts. Wash the limes, grate them dry, use a pestle remover to peel off some of the zests for decoration, grate the remaining peel. Squeeze the juice. Mix sugar, 3 tablespoons lime juice, lime zest, vanilla sugar, salt and butter with the whisk of the hand mixer. Mix flour, starch, pine nuts and baking powder and knead into the fat mass with the dough hooks of the hand mixer. Wrap the dough in foil and refrigerate for about 1 hour. Roll out the dough on a lightly floured work surface approx. 1/2 cm thin and cut out circles (approx. 5 cm Ø), kneading and rolling out the dough again and again.
Place on 3 baking trays lined with baking paper. Bake the trays one after the other in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 15 minutes. Stir icing sugar with the remaining lime juice until smooth. Fill 2 tablespoons into a freezer bag. Colour the rest green. Cover cooled cookies with green icing and let them dry for about 10 minutes. Cut off a small corner of the freezer bag and decorate the cookies with white icing and lime zests
Waiting time approx. 1 hour