Dish · japanese
Tonkotsu Ramen
Ramen in a broth boiled from pork bones, usually trotters, for hours until it turns cloudy white and thick with emulsified collagen and fat. Heavier than clear broths, often finished with soy sauce or salt.
Where it comes from
Tonkotsu ramen is associated with Kurume and later Hakata in Kyushu, where cooks in the mid-20th century found that boiling pork bones hard and long, rather than gently, broke down the fat and marrow into an emulsion that clouded the broth white.
What cooks argue about
The fight is boil intensity: a rolling boil for many hours emulsifies more fat into a thicker, whiter broth, while a gentler simmer stays clearer but risks never fully breaking down the bones' collagen.
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