The trend-topping drink, loved by celebrities, athletes and many humbler figures in search of better health, has been the hottest trend for a while now. This hip tonic is made by simmering bones in water over a long period of time to draw out all its nutrients and minerals into the liquid. Cooked with other ingredients like vegetables, herbs and spices, the umami-packed concoction can then be used as a base for other dishes or drunk on its own as a beverage. Research says the resulting collagen-rich liquid reduces inflammation, cures leaky guts, nourishes the immune system, strengthens bones and promotes radiant hair and skin.
Preheat oven to 400 . Arrange bones on a baking sheet in a single layer and drizzle with olive oil. Roast for 1 hour, about 30 minutes per side. If you are using raw bones, especially beef bones, it improves flavor to roast them in the oven first.
Meanwhile roughly chop carrots, celery and onions. Place roasted bones, chopped vegetables, cider vinegar, garlic, peppercorns and bay leaf in large stock pot.
Cover the ingredients with water. The water should be 2" above. Heat pot over high heat until at a rapid simmer. Reduce heat to low and cover simmer on low for 20 to 24 hours. Periodically, skim off the foam on top. Add water if the water level goes below ingredients
After the broth has darkened to a rich brown color, remove it from heat and strain through a fine-mesh sieve or colander. Place the broth in a large container and cool to room temperature. Once cooled, place it in fridge to chill or freezer for later use. Scrape off any solidified fat that rises to the top before using.