I've found the terms "aspic" and of course "drippings" and "gravy", but I don't think any of those quite describe what I'm asking about — for example, we just baked some meatballs and between each one there was a mix of both liquid fat and a grey-ish/pink-ish sludge. With chicken meat it tends to be whiter. It has a texture somewhere between cooked liver and jello.
Is there a proper name for this "sludge"? Are there any particularly traditional uses for it?
UPDATE: another question calls this same thing "scum", and the answers deal with what it is: What's that scum at the sides of my home-made burger when I cook it?
I'm wondering here what it's called, i.e. if there's a more generous term for it than "sludge" or "scum".