Stir the fat until creamy, mix in the eggs, egg yolks and powdered sugar. Sieve in the flour and knead in with gingerbread spices. Let rest in the refrigerator for 2 hours.
Then roll out and cut out triangles, cover with plum jam, fold over the corners. Brush with egg yolk, place on a baking tray lined with baking paper, bake in an oven preheated to 175 ° C for about 18 minutes.