Cook jacket potatoes in a salty water for 25 minutes in the normal pot or 15 minutes in the pressure cooker.
Let them cool for 20 minutes and peel them.
Mash potatoes with a potato ricer. Let them rest for another 30 minutes so the water evaporates.
Mix with flour, egg and egg yolk as well as salt & pepper. Now your potato dough is ready.
Sprinkle a bit of flour on the surface.
Form 2 inch (5-6cm) roll from the dough and cut it into 0,5 inch (2cm) thick slices.
Roll each slice into a finger-shaped noodle. The noodle should be around 3 inches long (7-8cm).