Carrots grate or in small pieces grater and smothered with fat. Pour water and boil until tender carrots. Add the feta cheese and noodles. Boil to melt Fidel. Egg mix with yogurt and flour. Put it on the stove and heat so slightly to brew, but not boil. The warm, but not hot soup is poured into the egg mixture, stir and returned to the pot of soup.