Mix part # 1 well with the paddle.
Add part # 2 until well incorporated.
Add part # 3 until well incorporated.
Scale off 800 g pieces and roll into long strips. Press flat slightly and brush with egg wash. Bake at 180 C until done. Cut into biscotti shapes while still warm. Place onto sheet pans, spaced apart and leave in warm oven over night Make sure oven is off.
Notes: Quiche dough: 200 g cake flour 100 g butter thymian Mix all the ingredient by hand. 1 egg yolk Cool for at least 1 hour. few drops lemon juice ice water as needed