Mix butter, vanillin sugar, Matcha powder, orange zest, up to 1 teaspoon, and 100 g icing sugar with the whisk of the hand mixer until creamy. Stir in eggs first, then flour. Pour the dough into a piping bag with a medium star-shaped spout and squirt curls (approx. 5 cm Ø) onto 2 baking trays lined with baking paper. Bake the trays one after the other in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 8-10 minutes
Remove the cookies and let them cool on a cake rack for about 20 minutes. Sieve 75 g icing sugar into a bowl. Mix orange juice and icing sugar to a smooth glaze. Spread the icing on the curls, then decorate with some orange peel. Let dry for about 30 minutes
Waiting time approx. 50 minutes