So I have a chocolate lab, and she’s got all sort of fun allergies. We’ve figured them out with a lot of trial an error. So she is allergic to: chicken, fish, corn, wheat, rice, and we just realized a couple months ago that she’s allergic to eggs. We feed her a good quality limited ingredient dry food, but we were mixing in a tablespoon of wet canned food into it for added fat to help with her dry skin, along with some coconut oil. The food was chicken and grain free, but it had egg whites in it, causing her to itch. I’ve always made her stock with leftover bones to add to her food as a treat (cook, freeze in ice cube trays), but now I’m making her food to replace the canned wet food.
I buy beef soup bones from Sprouts, and then added in any bones from home cooking that I tossed in the freezer. So I put ~2 lbs bones into a pot along with a piece of meat (maybe 1lb worth, sometimes less) and would simmer for 3-3.5 hours or so to reduce it down, then pull the bones out, pull off any meat/cartilage on the bones, and scoop out all the marrow and add all that back to the stock. I chop up all the meat too and add that back in. Then I add in about a cup of red lentils, chopped carrots, couple handful of peas, and if I have them on hand, some chopped spinach or kale. Cook another hour or so until thickened. I cook into almost a paste, because it takes up less room in the fridge/freezer. We add water to her food when we feed her. This makes enough for about 2-2.5 weeks. I freeze half and put half in the fridge in plastic containers.
With the instant pot, I did 50 minutes for the bones/meat, released the pressure, and then 15 min after I added the lentils and veggies. Then I turned it to saute for a few minutes to reduce it down a bit more.
ETA: Forgot to mention I also add a teaspoon or so of ground turmeric in with the lentils. It has anti-inflammatory and antibacterial benefits for dogs, just like it does for humans.