Name: Tonkotsu Ramen
Prep time: 30 min
Cook time: 12 h
Total time: 12 h 30 min
Yield: 4 servings
Cuisine: East Asian
Ingredients: 4 lbs pork leg bones, split; 1 lb pork fatback; 2 inches fresh ginger, sliced; 1 head garlic, halved; 1 onion, halved; Fresh ramen noodles (4 portions); 4 soft-boiled eggs, marinated in soy; Chashu pork belly slices; Nori sheets; Sliced green onions; Sesame seeds; Tare: soy sauce, mirin, sake

Milky pork bone broth simmered for 12 hours. Rich, collagen-heavy, and impossibly satisfying.

The Cultural Story

Tonkotsu ramen was born in Fukuoka, Japan, in the 1940s — a happy accident when a cook left pork bones boiling too long and the broth turned creamy white. That mistake became one of the most iconic soups in the world. The secret is time: bones are boiled aggressively for 12+ hours until the collagen breaks down completely. It is not a delicate soup. It is a meal that fills your bones.

Ingredients

4 lbs pork leg bones, split
1 lb pork fatback
2 inches fresh ginger, sliced
1 head garlic, halved
1 onion, halved
Fresh ramen noodles (4 portions)
4 soft-boiled eggs, marinated in soy
Chashu pork belly slices
Nori sheets
Sliced green onions
Sesame seeds
Tare: soy sauce, mirin, sake

Instructions

1Blanch bones in boiling water for 10 minutes. Drain and scrub clean — this removes impurities for a cleaner broth.
2Return bones to pot with fresh water (enough to cover by 2 inches). Add ginger, garlic, onion. Bring to a rolling boil.
3Keep at a hard boil for 12 hours. Yes, 12 hours. Add water as needed to keep bones covered. The broth will turn milky white around hour 6.
4Strain the broth. You should have a thick, creamy, white liquid. Season with tare (mix of soy, mirin, sake) to taste.
5Cook ramen noodles for 90 seconds in boiling water. Drain and place in bowls.
6Ladle hot broth over noodles. Top with chashu pork, soft-boiled egg (halved), nori, green onions, and sesame seeds. Serve immediately.

Community Reviews (2)

James W. ★★★★★

Yes it takes 12 hours but the result is unreal. The broth was milky white and rich beyond belief. Made a double batch and froze half.

Yuki T. ★★★★☆

Good recipe. One tip: keep the boil aggressive. If you simmer gently you will get a clear broth instead of the creamy white tonkotsu texture.

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