Bone broth is something I discovered last year, and have been making ever since. It is a great way to use up something that would normally get thrown away, and is very nutrient dense. I also LOVE how SIMPLE it is to make; simple is definitely my style! The way I do it is:
1. Cook a whole chicken in the crock-pot during the day.
2. Pick chicken after dinner, placing meat into freezer bags, and skin and bones back into the crock-pot.
3. Add any vegetable scraps you have (I save mine in a bag in the freezer), and 6-8 cups of water (depending on the size of your crock-pot).
4. Let your broth cook on low overnight about 12-16 hours.
5. Allow broth to cool some, and drain through a colander into a large bowl or pot. Skim any fat off the top, and measure your broth into containers or bags for the freezer (I usually do 1 or 2 cups each).
6. Repeat. I usually do just 2 batches, but some do 3 or 4. Each subsequent batch will be weaker than the first.