
This is the one pot behind the whole "Around the World in 80 Broths" idea: build a single deeply collagen-rich beef base, then finish it five different ways across the week. Blanch, simmer low and slow, chill until it sets like jelly, and you're holding phở, seolleongtang, paya, a shabu base, or a plain sipping broth — your choice, same pot.
Put the oxtail, shank, trotter and tendon in a large pot, cover with cold water, and bring to a hard boil. Boil to release the scum, then drain and rinse the bones and pot. This blanch is what gives you a clean broth.
Return the bones to the pot. Add the onion, ginger, and vinegar, cover with fresh cold water by two inches, and bring to a bare simmer. Simmer low 8–12 hours, skimming foam and topping up water as needed. The longer and gentler, the more collagen and the clearer the result.
Strain through a fine sieve (save the shank and oxtail meat — it's delicious). Cool it down promptly (see the safety note below), then refrigerate overnight.
Read the two layers. The next day you'll see a pale, waxy white cap on top and jelly underneath. The white cap is the fat (beef tallow) that rose and hardened; the wobble beneath is the collagen. Scrape the cap off for a leaner broth (save it — it roasts incredible potatoes), or leave a little for richness. If the broth set like jelly, you nailed it.
Cool the strained broth quickly — don't leave it at room temperature more than about two hours; an ice-water bath in the sink speeds it up. Keep it in the fridge for up to 4–5 days (the fat cap helps seal it), or freeze for up to 3 months. Reheat to a full simmer before serving.
Char onion and ginger, add star anise, cinnamon and a clove or two; season with fish sauce. Serve over rice noodles with herbs, lime, and thin beef.
Keep it milky and unseasoned. Salt, sliced scallion, and rice added at the table — clean and comforting.
Bloom ginger-garlic with turmeric, garam masala and chili, stir into the broth, and serve it rich with the reserved meat.
Thin it, add a piece of kombu, and use it as a light hot-pot broth to swish thin-sliced beef and vegetables.
Simmer with bay, thyme and peppercorn, finish with a squeeze of lemon, and drink it from a mug on a cold morning.
Broth gives you high-quality protein, the amino acids glycine and proline, and minerals, in a low-carb, blood-sugar-friendly form that's genuinely satisfying. The dramatic joint-and-skin claims run ahead of the science — so make it for the flavor and the range, and take the rest as a bonus. Watch the sodium, and if you have kidney or blood-pressure concerns, check with your doctor.
A heavy 8-quart stockpotaffiliate link pending and a fine-mesh straineraffiliate link pending are the only special gear.
Want the full story behind this — the world tour of collagen broths and the honest science? Read Around the World in 80 Broths.
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