In a large bowl, stir together the flour and salt. Add the beaten egg, milk, and butter. Knead dough until smooth, about 5 minutes. Let rest in a covered bowl for 10 minutes.
On a floured surface, roll out dough to desired thickness (I roll it as thin as possible until it's see through and can't get much thinner). Use additional flour as needed to keep dough from sticking to rolling pin.