When dh's aunt from Hungary was here, she would love to find those types of goodies! She made
chicken neck and mushroom soup, (made with a roux of paprika) and also lucked out with duck feet... (made a duck foot / pea soup). Both were yummy!
Just need to know going into it that you may need your hands! If I recall correctly, the broth / stock was made; seasoned / veggies added according. The necks or feet were served / chewed on the side.