What is tonkotsu ramen?

Tonkotsu ramen is a rich, creamy Japanese noodle soup featuring a pork bone broth that's been simmered for 6-12+ hours until it becomes milky white and deeply flavorful. The name "tonkotsu" literally means "pork bones" in Japanese. According to urban legend, this style originated in Kyushu (southern Japan) by accident after a ramen stall owner left a pot of boiling pork bones alone for hours and came back to find the milky, cloudy delicious tonkotsu. Tonkotsu is known for its incredibly rich, almost sauce-like consistency that coats the noodles beautifully. Unlike other ramen broths that might be clear, tonkotsu gets its signature creamy appearance and slippery mouth feel from the collagen and fat extracted from pork bones during the long cooking process. And it's our favorite ramen style to eat and make at home!

How to make ramen broth?

To make authentic ramen broth, you'll need bones (pork bones for tonkotsu, chicken for paitan) , aromatics (onion, garlic, ginger, shiitake mushrooms, etc.) , and time. First, blanch the bones in boiling water for 5-10 minutes, then rinse and scrub them clean (or if you're being lazy, just discard the blanching water and start with fresh water). Add the cleaned bones to a large pot with fresh water and aromatics, then simmer at a rolling boil for 6-12 hours (8 hours is our preferred sweet spot) , skimming foam regularly. The key is maintaining a consistent boil to emulsify the fats and create that creamy texture. For tonkotsu specifically, you'll want to use pig trotters and pork or chicken neck and back bones for maximum collagen extraction.

How to make ramen noodles?

Authentic ramen noodles are made with high-gluten flour, water, salt, and kansui (alkaline mineral water) or baked baking soda, which gives them their characteristic chewy texture and yellow color. The alkaline environment is crucial - it's what makes ramen noodles completely different from regular pasta. And instead of buying kansui, you can make my Easy Baked Baking Soda as a substitute which literally costs pennies and is just as effective. Then use it to make my easy homemade ramen noodles recipe.

Chashu is traditional Japanese braised pork belly that's a classic ramen topping. It's made by slowly braising pork belly in a mixture of soy sauce, mirin, sake, sugar, and aromatics until it becomes incredibly tender and flavorful. The pork develops a beautiful mahogany color and almost melts in your mouth. Unlike Chinese char siu, which is often roasted and has a slightly sweet glaze, Japanese chashu is all about that melt-in-your-mouth texture from low, slow braising. You can find my complete Easy Chashu Pork チャーシュー recipe here .

How to make ramen better?

To elevate your ramen game: 1) Always warm your bowls before serving, 2) Cook noodles separately and add to hot broth just before serving, 3) Layer your toppings thoughtfully - soft-boiled eggs, chashu, scallions, nori, french fried scallions, corn, shiitake mushrooms, fish cake, etc. 4) Make your own ramen eggs (ajitsuke tamago), 5) Use high-quality miso or soy sauce for your tare, 6) Add aromatic oil on top (mayu, rayu, or garlic oil), and 7) Don't rush the broth - good ramen broth takes time to develop those deep, complex flavors.

How long does it take to make ramen broth?

Authentic tonkotsu ramen broth takes at least 6-12 hours of active simmering and can be cooked for up to 48 hours. I recommend 8 hours (it's our preferred sweet spot) for the perfect balance of flavor and richness. The long cooking time is essential to extract collagen from the bones and create that signature creamy, milky-white broth with its addictive slippery mouth feel. You can make it in as little as 6 hours if you're short on time, or go up to 13 hours for an even richer result (but you'll need to keep topping it up with water to keep it from becoming too thick) . The key is maintaining a rolling boil throughout the entire process - this emulsifies the fats and creates the creamy texture that tonkotsu is famous for.

Shoyu ramen is a soy sauce-based ramen that's actually the oldest and most traditional style of ramen in Japan. "Shoyu" means soy sauce in Japanese. The broth is typically clear and lighter than tonkotsu, made with chicken, pork, or seafood stock and seasoned with a special soy sauce mixture called "tare." Shoyu ramen has a clean, savory flavor that lets you taste all the individual components - the noodles, toppings, and aromatics. It's less rich than tonkotsu but incredibly satisfying, and often considered the most balanced of all ramen styles.

How to cook fresh ramen noodles?

Fresh ramen noodles cook much faster than dried - typically just 1-3 minutes in a large pot of boiling water. The key is not to overcook them since they'll continue to soften slightly when added to the hot broth. Cook them until they're just al dente, then immediately drain and rinse briefly with cool water to stop the cooking process. Cook your ramen noodles to your preferred doneness level - in authentic Hakata ramen shops , diners can customize their noodle firmness from 'harigane' (extra firm and chewy) to 'futsu' (normal texture) . I recommend cooking fresh ramen noodles just until al dente since they'll continue to soften slightly when added to the hot broth. Add them directly to your prepared ramen bowl with hot broth. Fresh noodles have a springier, chewier texture than dried ones and really make a difference in the final bowl quality.

Can I make ramen broth ahead of time?

Yes! Ramen broth actually improves with time and can be made 2-3 days in advance. Store it in the refrigerator where it will gel like Jell-O due to all that extracted collagen (aka natural gelatin) - this is exactly what you want! The broth also freezes beautifully for up to 1 year. I know this, because I've kept this tonkotsu broth in the freezer for a full year and it was just as delicious as the day I made it. When ready to serve, simply reheat gently and thin with a little water if needed. Making broth ahead actually makes ramen night much more manageable.

Where to buy fresh ramen noodles?

Fresh ramen noodles can be found at Asian grocery stores, Japanese markets, and some well-stocked regular supermarkets in the refrigerated section. Look for brands like Sun Noodle or Hakubaku. Many Asian markets also make fresh noodles daily. If you can't find them locally, you can order them online from specialty retailers. As a last resort, good-quality dried ramen noodles work too - just avoid the instant packet kind. You can also make your own fresh ramen noodles at home with just a few ingredients.

What does tonkotsu mean?

Tonkotsu literally means "pork bones" in Japanese. The word combines "ton" for pig and "kotsu" for bone. It refers to the rich, creamy broth made by boiling pork bones for many hours until the collagen and fat emulsify into a milky white soup.

How long does it take to make tonkotsu broth?

Authentic tonkotsu broth takes 6-12 hours of active boiling, with 8 hours being the sweet spot for optimal flavor and texture. You'll also need about 30 minutes of prep time for blanching and cleaning the bones before the main cooking begins. Some Ramen-ya's cook the bones for 24 to 36 hours.

Can you freeze tonkotsu broth?

Yes! Tonkotsu broth freezes exceptionally well for up to 1 year without any noticeable change in quality whatsoever. This is my favorite way to meal prep homemade ramen broth. I recommend freezing it in portion-sized glass canning jars or other airtight containers so you can thaw only what you need. Simply reheat to use.

What is the difference between tonkotsu and tonkatsu?

Despite sounding almost identical, these are completely different dishes. Tonkotsu means "pork bones" and refers to the creamy ramen broth. Tonkatsu means "pork cutlet" and is a breaded, deep-fried pork dish similar to schnitzel. The confusion is common since they differ by just one syllable!

How many calories are in tonkotsu ramen?

A typical bowl of tonkotsu ramen contains approximately 500-700 calories, though this varies significantly based on toppings and portion size. The broth itself contributes around 150-200 calories per serving, with additional calories coming from noodles (200-300), chashu pork (100-150), and other toppings.

What are the best toppings for tonkotsu ramen?

Classic tonkotsu ramen toppings include chashu pork (braised pork belly), ajitsuke tamago (marinated soft-boiled eggs), wood ear mushrooms, nori (seaweed), menma (fermented bamboo shoots), and thinly sliced scallions. Many shops also offer corn, bean sprouts, garlic, and spicy condiments like rayu (chili oil) or karashi takana (spicy pickled mustard greens).

Is tonkotsu ramen gluten free?

The tonkotsu broth itself is naturally gluten-free since it's made only from pork bones and water. However, traditional ramen noodles contain wheat flour and are not gluten-free. Many tare seasonings also contain soy sauce (which has wheat). For a gluten-free bowl, you'd need to use rice noodles or specialty gluten-free ramen noodles and a gluten-free tare made with tamari instead of regular soy sauce.

Does tonkotsu ramen have fish in it?

Traditional tonkotsu broth is made purely from pork bones and does not contain fish. However, some ramen shops create a "double soup" (Gyokai Tonkotsu) that blends pork bone broth with fish-based dashi for additional umami depth. If you have a fish allergy, always ask whether the tare or broth contains any fish products like bonito flakes or dried sardines.

Tonkotsu Ramen Recipe (Easy Authentic Ramen)

Name: Rich and Creamy Homemade Tonkotsu Ramen Broth Recipe
Prep time: 30 min
Cook time: 8 h
Total time: 8 h 30 min
Cuisine: Japanese
Ingredients: 1 1/2 pounds pork trotters (pig's feet), split in half or cut into quarters (.75kg); 1/2 pound of chicken backs (about 2) (250g); 1 tablespoon oil (15g); 1/2 large onion; 1/2 large carrot; 2 scallions, or more to taste; 1 whole leek, cut lengthwise (85g); 1 fresh or dried shitake mushroom, or more to taste (sub porcini); 1 teaspoon bonito flakes; 3 to 4 garlic cloves; 1 inch piece of ginger (3g); enough water to cover the bones fully throughout the duration of cooking

Description

This rich and creamy tonkotsu ramen broth is incredibly easy to make from scratch. It's the ultimate umami-packed, lip-smacking ramen broth loaded with complex flavors and slurpy deliciousness. Plus, it freezes extremely well for up to 1 year if you want to double the recipe!

Ingredients

Tonkotsu Broth Ingredients

1 1/2 pounds pork trotters (pig's feet), split in half or cut into quarters (.75kg)
1/2 pound of chicken backs (about 2) (250g)
1 tablespoon oil (15g)
1/2 large onion
1/2 large carrot
2 scallions, or more to taste
1 whole leek, cut lengthwise (85g)
1 fresh or dried shitake mushroom, or more to taste (sub porcini)
1 teaspoon bonito flakes
3 to 4 garlic cloves
1 inch piece of ginger (3g)
enough water to cover the bones fully throughout the duration of cooking

Cook Mode Prevent your screen from going dark even when your hands have flour all over them

Instructions

Blanch and clean the pork and chicken (is using). In a large stock pot or 7-quart Dutch oven, add pork and chicken and cover with water. Bring the water to a boil and immediately turn off the heat. Strain the water and wash the bones under cold running water. Clean the pot and dry it. Use a chopstick or skewer to clean the bones by removing any dark-colored coagulated blood, marrow, etc. Give the bones one last final rinse and set aside.
(Optional step) Sear the vegetables. To the same pot, add the oil and pan-sear the vegetables and aromatics until slightly charred. Feel free to skip to step #3.
Cook the tonkotsu. Add pork and chicken to pot with vegetables, cover with water to fully immerse bones. Bring to rolling boil, reduce to medium heat for low-rolling boil. Skim foam and any impurities until surface is clear - wipe pot sides with damp cloth to remove stuck residue. Cover and cook 6-8 hours, checking every 2 hours to add water as needed (I added 2 cups at 3h 40min mark - adjust accordingly). If using pork fatback or belly, remove after 4 hours, chop finely when cool, refrigerate until adding back to strained broth.
Strain the tonkotsu. When the tonkotsu is finished cooking, strain it through a fine mesh sieve or cheesecloth. Place it back into the pot and reduce it as little or as much as you want to get the desired consistency. Season with shoyu tare (or your favorite tare) before using it and Enjoy!

Notes

I use a 7-quart Dutch oven, but any good heavy-bottomed stock pot will work.

Customization: This tonkotsu broth is delicious as-is, but feel free to add a few more mushrooms, onions, or even chicken or pork - you can't really go wrong. Just be sure to use the minimum amount of total meat called for.

Timing: Cook 6-13 hours (I prefer 8 hours). For 12-13 hour cooking, add water to prevent overly thick consistency unless you prefer it that way.

Pork fatback: If using, remove from strained broth, chop until creamy and paste-like, then add back to seasoned broth.

Storage tip: Repurpose old soy sauce bottles (like Kikkoman with pour spouts) for homemade tare - they're airtight and perfect for table service.

TARE & DASHI RECIPES (shoyu, shio, miso, and dashi stock recipes can all be found in the main post!

Prep Time: 30 minutes
Cook Time: 8 hours
Category: Soups & Stews
Method: Long Simmer Stovetop
Cuisine: Japanese

Nutrition

Serving Size: 2 to 3 cups