To 1 egg yolk (no whites) add 2 tablespoons cream and a big pinch of salt. Beat. Work in flour to make a stiff dough. Roll out thin. Roll up and cut to desired size noodles. If time permits let set 30-60 minutes. If not, use immediately. Drop into boiling broth or water, stir and cover. Over medium heat, cook 20-30 minutes. These noodles will not be tough. Use 1 egg yolk for each serving needed.