Peel and cube the potatoes, then boil them until tender.
Drain the potatoes and mash them until smooth.
Let the mashed potatoes cool slightly.
In a mixing bowl, combine the mashed potatoes, flour, and salt.
If using, add the egg to the mixture for richness.
Knead the dough until smooth and elastic.
Divide the dough into manageable portions for rolling.
Roll out each portion on a floured surface to your desired thickness.
Cut the rolled dough into noodle shapes.
Bring a pot of salted water to a boil and cook the noodles for about 3-4 minutes until they float.