DinnerMay 05, 2026

Traditional Tonkotsu Ramen

A rich and creamy pork bone broth soup served with fresh noodles, tender chashu pork, and a soft-boiled egg.

Prep Time1 hr
Cook Time12 hrs
Servings4
DifficultyHard
Traditional Tonkotsu Ramen

Ingredients

Broth

  • 2kg pork bones
  • 1 onion, halved
  • 1 head garlic, halved
  • 2 inches ginger, sliced
  • Green onions

Chashu

  • 500g pork belly block
  • 1/2 cup soy sauce
  • 1/4 cup mirin
  • 1/4 cup sake
  • 2 tbsp sugar

Assembly

  • 4 portions fresh ramen noodles
  • 4 soft-boiled eggs (Ajitsuke Tamago)
  • Nori sheets
  • Wood ear mushrooms

Instructions

1

Clean the Bones

Boil the pork bones for 15 minutes, then drain and wash them thoroughly under running water to remove impurities and blood.

2

Simmer Broth

Return bones to a clean pot with fresh water, onion, garlic, ginger, and green onions. Simmer vigorously for 12 hours, topping up water as needed, until the broth is milky white.

3

Prepare Chashu

Roll the pork belly and tie it with butcher's twine. Sear on all sides, then braise in a mixture of soy sauce, mirin, sake, sugar, and water for 2 hours until tender.

4

Prepare Eggs

Soft boil eggs for exactly 6 minutes, shock in ice water, peel, and marinate in the leftover chashu braising liquid for at least 4 hours.

5

Cook Noodles

Boil fresh ramen noodles in heavily salted water for 1-2 minutes depending on desired firmness. Drain well.

6

Assemble

Place noodles in a bowl. Pour over the piping hot, strained broth. Top with sliced chashu, halved egg, mushrooms, nori, and chopped green onions.

Nutrition Facts

Calories650 kcal
Carbohydrates55g
Protein32g
Fat34g

* Based on a 2,000 calorie diet.