At this time, boil the noodles.
Meanwhile, prepare the sauce.
(I didn't take pictures of the whole cooking process, because this process is painfully responsible, you can't be distracted)
Melt the butter in a frying pan, add the flour, mix well. Then add the warm broth, stirring constantly, cook the sauce until thickened. Add salt and seasonings. P.S. In fact, the amount of ingredients depends on how much sauce you want. For such a large number of products, a lot of sauce is not needed. You can also adjust the thickness of the sauce. The longer you cook, the thicker the sauce becomes. For our dishes, too thick sauce, as well as too liquid, is not needed. I tried to make it with Bechamel sauce, it's also very tasty.