Oh I'm sorry, are you disappointed? You won't be after reading this. ;) All the cool kids are doing it. Really.
Bone broth is one of those "everything old is new again" phenomenon. It's a traditional food in many cultures, and for reason alone it should probably should be part of your diet. What likely started as a way to use all the parts of an animal, bone broth is simply the strained liquid made from boiled down animal bones (chicken, pork, beef, or fish) with vinegar and water, and maybe some vegetables and spices. It gives you good skin, good digestion, a strong immune system, and is also good for achey joints!