About once per month, my mother prepares chicken with rice and a currysauce with pineapple. I don't know exactly what the method of preparation is of the chicken because it's prepared by one of those traveling grilling trucks.
However, what I do know is that there is a small (like 2 cm wide and half a cm deep) cavity in one of the hips of the chicken that's filled with really tasty meat. The cavity is open on the inside and I think it's the best part of the chicken. It appears to be some kind of organ meat, but I'm not sure what exactly it is. I also don't have a picture of the meat, sorry.
What could this meat be?