In a medium bowl mix together 50% of one beaten egg, the salt and the flour, and knead with your fingertips until a firm, smooth dough forms. You add the flour step by step until it comes together into a soft non-sticky dough.It is hard to tell exactly how much flour you need 8depends on the size of your egg), you go by feel.
Pinch off small pieces of dough about the size of a lemon seed and roll them. Drop them onto a plate, sprinkle some flour over so they do not stick together. When you add them to a soup, stir immediately otherwise they stick together, cook them for about 8-10 minutes.