I always joke that making bone broth "is a pain in the ass." That being said, it is TOTALLY worth it. Keep in mind that there are numerous ways to make broth but the most important thing is that you use bones from healthy animals. The book "Nourishing Broth" by Sally Fallon Morell is the bible of bone broth if you would like more detail on the subject. She doesn't suggest pressure cooking, but I have found that I get just as good bone broth from a pressure cooker as stove top. It is also much faster. Collagen peptides are heat stable up to 500 degrees so you won't have to worry about altering the structure of the proteins.
8 cups of water (or enough to cover the bones
in the pot)
1/4 cup of apple cider vinegar
1 onion, quarterd
1 head of garlic
3 stalks of celery
1 Tablespoon of peppercorns
Pressure Cooker/Instapot: Add all ingredients to pot. Pressure cook on high for a total of 6 hours for beef. It is important to cook your stock for over 4 hours to allow maximum extraction of proteins and minerals (especially for dense beef bones.) It also caramalizes the vegetables and creates rich deep flavors. This also eliminates the need to pre-roasts the bones and veggies.
Stove-top: Combine all ingredients in a large stock pot. Bring to a boil and reduce heat to low. Cover and simmer for 48 hours. Add more water as it evaporates. Note: It is not recommend to do this unmonitored with a gas stove.
Slow-cooker: I find that most slow-cookers are lined with a non-stick lining. I highly recommend ditching any non-stick coated cookware. If you do want to use the slow-cook method, just combine all ingredients in your slow cooker and slow cook on high for 48 hours. Monitor the water level and add more water as it evaporates. **note: Some slow cookers don't get hot enough to make a really thick broth.
Now the fun part! Strain out the bones and ingredients. I place a colander in a large bowl and pick out the bones with tongs, a mesh basket or a small strainer. Once you get all the big pieces out it is a good idea to strain the broth through a fine mesh sieve to get any large chunks or peices of bone out. At this point you can either use a gravy fat separator, or just place your broth in the fridge and wait for the fat to harden so you can remove it. The fat can be used to fry potatoes or any other foods.
Store bone broth in the fridge for 1 week or freeze in small containers or ice cube trays. Use within 2-3 months for best results. Spent bones are a great addition to a garden compost, especially if charred in a fire pit first.