Every other stock on this site says never boil. Tonkotsu says boil hard, for eight hours, and that is the entire technique — a rolling boil emulsifies the fat and collagen into the water, which is what turns it white and gives it that coating richness. A gentle simmer produces a thin brown broth, which is a different soup.
The ratio4 lb pork bones, blanched, then a ROLLING boil 8 hours. Broth + tare + aroma oil = the bowl.
By Vince Gonzalez · Published July 2026 · Sourcing verified 5 Jul 2026
Prep30 min
Cook8 hours
Makes4 quarts
CuisineJapanese
Cost$$
Gluten-freeDairy-free
The Ingredients — and where to get them
Cook for4quarts
Pork bones
Four pounds of trotter and femur. Trotters carry the collagen that makes it thick.
Blanch the bones firstCover with cold water, bring to a boil, boil ten minutes, then dump it and scrub the bones. This removes the scum that would otherwise make the broth grey and gritty. It looks wasteful and it is essential.
Boil hard, not simmerFresh water to cover, then a rolling boil for eight hours. This is the one stock where aggression is correct.
Top up with boiling waterCheck every hour and keep the bones covered. Cold water would drop it out of the boil.
Aromatics in the last two hoursOnion, garlic, ginger, scallion. Earlier and they turn bitter over eight hours.
Make the tare separatelySoy, mirin and sake simmered five minutes. Two tablespoons in the bowl, then broth on top. Seasoning the whole pot instead is what makes homemade ramen taste flat or oversalted.
Strain and assembleTare in the bowl, hot broth over, then noodles and toppings. A spoon of aroma oil — scallion or garlic fried in fat — goes on last.
Make it yoursMiso whisked into the tare for miso ramen. Doenjang for something funkier. Chili crisp on top. A vegan version uses the same method with dried shiitake, kombu and roasted onion.
Can you make How to Make Ramen Broth in an air fryer? — Yes, with an insert
Not on its own — an air fryer can’t hold a pool of liquid. You can simmer it in an oven-safe dish or a silicone insert made to fit the basket, but the broth won’t reduce or brown the way it does on the stove, and that insert comes out scorching, so use oven mitts. For real depth, a pot on the stove wins.
Can you freeze How to Make Ramen Broth? — Yes
Yes — it freezes well. Cool it fully, portion into airtight containers, and it keeps a few months; thaw in the fridge and reheat gently.
Can you make How to Make Ramen Broth ahead of time? — Yes
Yes — it holds well and often tastes better the next day. Make it ahead and reheat gently before serving.
Is How to Make Ramen Broth gluten-free? — Yes
Yes — nothing in this recipe as written contains gluten. As always, glance at the labels on any packaged items (broth, sauces, chocolate), since brands vary.
Is How to Make Ramen Broth vegan? — No
No — it contains meat, so it isn’t vegetarian or vegan.
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