What are people drinking? The bone broth itself? Or the soup you made with the broth?
If you're drinking the actual broth, that would be fairly concentrated in terms of fat and cartillage, depending on whether you used marrow or small bones. If I were to do that, I would first have to crack and melt the ice-like fat layer at the top. But this does not taste good, since it's all fat and satiety immediately kicks in. I can't drink more than a tablespoon or two of this stuff .
I use the broth to make my bone-broth soup. My mix is about 1/5th to 1/8th bone broth (with lots of sliced vegetables and additional items mixed in such as beef cubes, salad shrimps, diced liver, spices, etc.). At that level, it's still very rich but not as concentrated as the actual broth, which to me is too satiating and thus not edible.
What do u think?
EDIT: 6/9/2011: when I prepare my bone-broth, I use heavy marrow bones and small rib and neck bones, and a cup of vinegar. Upon boiling, all the marrows come right out. I use a fork and knife to detach any cartillage or tendons from the rib and neck bones. I boil for 2-3 days. In that span, the water evaporates, so I end up actually replenishing the water 3-4 times. I throw away the marrow bones but keep the smaller bones for the next time.
The resulting broth is thus "concentrated" and was made from 3-4 times the actual water poured in. Now, that's the broth. Then I cook my soup and add the broth. I never drink the broth itself since it's just too unappetizing and filling. If anyone still has a problem porking out while Paleoing, just drink a tablespoon of this "concentrated broth". Trust me, you won't eat anything the rest of the day. I can't think of anything that will control your appetite as well as this ... oh yeah, those redskin Spanish style peanuts from Planters ... but they're legumes. Maybe you can cure leptin resistance with this.
Related question: what's going on here? Is the bone-broth fat somehow flatlining insulin? Is it the fat or the protein?