Bone Broth (For collagen extraction). Possible issue?

[IamRainey]

My thoughts on fat be it chicken(smaltz), duck, pork(lard), or cow(butter) are all natural, not processed, homogenized, hydrogenated, etc. I feel when they are altered to make them more appealing, longer lasting on store shelves is where problems start.

Well said! I keep jars of various sorts of fat in my fridge. It's great to sauté with and I can make gravy when I haven't done a roast.