"If you’ve been following me for a while, you probably know that we raise animals for meat – and that it’s not something I take lightly. It’s important to me that we use as much of each animal as possible. I think it shows respect for life, when we try to waste nothing. Meat is eaten. Pelts are cured and used. Even some of the feathers get used. But…after we’ve eaten a roast or a chicken, and used the remnants to make broth, there’s still that leftover pile of bones that just get sent to the compost heap. And while that compost does get used on the garden and doesn’t go to waste, I have felt that I’m missing an opportunity by not making better use of the wonderful phosphorous and other nutrients left in the bones, in a more targeted way." https://saltinmycoffee.com/how-to-make-bone-meal/