While the meat is boiling, prepare the dough. Pour the water into a bowl, add egg and salt while stirring. Add the flour and knead the dough. The ready dough should be divided into two equal parts and placed for 10-15 minutes under a dish. This procedure makes it soft and pliable for rolling. Make those 2 parts into a bun which is then flattened by pressing down on it. Keep covered with a linen cloth and left for 15 minutes.
Roll each bun to a thickness of about 2-3 mm. Fold the dough into a roll and cut across into the form of noodles about 3-4 mm wide.
Lower the noodles into the boiling mutton broth (after having taken off the meat). When the noodles float to the surface, stir the pot and simmer for another minute. Remove the noodles from the pot, let them drain and place them onto a dish.
Cut two of the onions into rings and put in the boiling lamb broth for 1 minute. Remove from the broth and put an even layer of onions on the noodles.
Place the strips of meat in the form of a small hill in the middle of the rings of onions.