Tonkotsu Ramen
This is a labor of patience, not complexity. The goal is to break down the connective tissue until the broth coats the back of a spoon like heavy cream.
Commit to the boil.
Clear your afternoon. A shallow, narrow pot will make it difficult to skim, so use a tall stockpot that gives your bones enough room to submerge while leaving space for the fat to foam.
- 12-quart heavy-bottomed stockpot
- Fine-mesh chinois or cheesecloth
- Immersion blender
- Ladle
What goes in.
- 5 lbpork trotters and marrow bones, split
- 1 lbpork back fat
- 2 headsgarlic, halved horizontally
- 4 inchesfresh ginger, smashed
- 2yellow onions, halved
- 12 ozfresh alkaline ramen noodles
- 6soft-boiled eggs, marinated
- to tasteshio tare (seasoning base)
The Rolling Boil
Keep the water at a constant, aggressive boil rather than a simmer. This agitation forces the released fat to bond with the collagen-rich water, creating the signature opaque white broth.
The method.
Blanch the bones
Cover bones with cold water in the stockpot, bring to a boil for 15 minutes, then drain. Scrub each bone clean of gray scum under cold running water.
The long boil
Return clean bones to the scrubbed pot. Add the pork fat, garlic, ginger, and onions. Cover with fresh water by two inches. Boil uncovered for 12 hours, topping off with boiling water to keep bones submerged.
Emulsify
In the final hour, use an immersion blender to break up the softened aromatics and fat directly into the broth. The liquid should transform from translucent to a milky, pale cream.
Strain
Pass the broth through a fine-mesh chinois into a clean pot. Use a ladle to press as much liquid through the solids as possible before discarding the bones.
Assembly
Add 2 tablespoons of tare to each bowl. Pour in the boiling broth and whisk to combine. Add cooked noodles, sliced pork, and a halved egg.
Other turns to take.
Black Garlic Oil (Mayu)
Drizzle with blackened garlic oil for a bitter, charred depth that cuts through the richness of the fat.
Spicy Miso
Whisk a tablespoon of spicy red miso into the tare for a heavier, punchier broth base.
When it doesn't go to plan.
Always use cold water when topping off the pot to prevent the temperature from dropping and stalling the emulsification.
If the broth isn't creamy enough, boil it harder in the final hour to force the fat to integrate.
Freeze leftover broth in single-serving portions; the collagen content will make it set like jelly when cold.
The ones that keep coming up.
Why does my broth look brown instead of white?
The bones were likely not cleaned thoroughly enough after the initial blanch. Any residual blood or impurities will muddy the color.
Can I use a pressure cooker?
You can shorten the cooking time to 90 minutes in a pressure cooker, but you will still need to finish it with a high-heat boil in an open pot to achieve the right texture.
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