Zubereitung

1. 1

   Quickly knead the flour, the cold butter or margarine in pieces, the sugar, the vanilla sugar, the salt, the grated lemon zest and the two egg yolks to a smooth shortcrust pastry.

2. 2

   Press the dough flat, wrap it in cling film and chill it.

3. 3

   Preheat the oven to 180 °C conventional heat and line three baking trays with baking paper.

4. 4

   Roll the dough into pencil-thick strands about 8 cm long and lay them on the trays as S shapes, spaced well apart.

5. 5

   Whisk the egg yolk for glazing with the milk, brush the pieces thinly with it and scatter over the pearl sugar.

6. 6

   Bake the trays one after another on the middle shelf until the biscuits are golden.

7. 7

   Let the Butter-S firm up briefly on the tray and then leave them to cool completely on a wire rack.