Did that since I was a kid. Nobody said not to. Mutton as well.
Turkey wing marrow is also good.
I been don’t that since I was a kid. I still do it to chicken.
Back in the 1960’s, I grew up in the city of Detroit with my family of five. My mom worked in the meat department at the A&P three blocks away across Gratiot Avenue on the East-Side. My Dad was a strict meat-and-potatos kind of guy and his diet reflected that philosophy. My mom used to get good deals on the meat at her A&P and she would always bring home rib steaks for my dad. At that time, the steaks still had bones in them and my mom would cook them under the broiler. She served them with mashed potatos, and my favorite thing was calling dibs on the rib bone so I could suck the delicious marrow out of the steak bone.