Knead a shortcrust pastry from the specified ingredients (it is a bit crumbly at first, but becomes homogeneous with longer kneading due to the warmth of the hand - maybe use a little more butter if necessary). Finally knead in the finely diced candied ginger. Shape the dough into a roll the size of cookies, wrap in cling film and refrigerate for approx. 30 minutes.
Then cut into approx. 0.5 cm wide slices and place on a baking sheet lined with baking paper.
Bake in a preheated oven at 175 ° C hot air for approx. 10 - 15 minutes.