This is so easy, and so, so good. The only drawback is that it takes a long time, but it’s not hands-on time, just lots of waiting. It is kind of like French onion soup. I eat it as a soup on its own. My husband uses it for French dip sandwiches. It starts with homemade beef bone broth. I have been making it in a pressure cooker lately.
Onions (about 4)
Garlic (2 bulbs)
Coarse sea salt
The key to this recipe is roasting the bones, onion, and garlic first. I do this in the oven at 400, for 45 minute to 1 ½ hours. You can use a glass baking dish or oven-proof bowl. A bowl seems to work best for the bones. Put all the bones in a glass, oven-safe bowl and drizzle some olive oil on top (just to keep them from sticking). Slice the onions into thirds. I don’t bother peeling them. Slice the tops off the garlic bulbs. Pour a little olive oil in the bottom of a glass baking dish. Put the onion and garlic in the baking dish. Roast the bones, onion and garlic. The onion and garlic will be done before the bones.
Pour a little olive oil in the bottom of the pressure cooker. Toss in one bulb of garlic and half of your onions. Save the rest of the onions and garlic, and the oil they roasted in, for later. Toss in the bones and the oil and fat from the bones. Add some lemon juice (maybe ¼ cup), sea salt (about a handful or so), and cold water. My pressure cooker has a line that shows you how much water you can add.
If your broth is chilled, it will be a jiggly lump. That’s good; it means it came out right. Place about 6 cups of broth in a pot on the stove. Store the rest in the fridge or freeze it for other recipes or just to sip on. Peel the onions and toss them in the broth. Squeeze the garlic out of its shell, into the broth. Simmer, uncovered, for about an hour. It will reduce.