Slow-Simmered Tonkotsu Ramen with Pork Bone Broth

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A deeply flavorful ramen broth made by simmering pork bones for 6 hours, yielding a creamy, gelatinous base that coats the noodles perfectly. Topped with tender chashu pork and fresh scallions. This japanese-inspired asian ready in about 400 minutes pairs pork bones, water, thinly sliced ginger for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 680 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

★ 3.5 (11 ratings) Prep: 25 min Cook: 375 min Serves 4 Japanese cuisine 680 cal/serving
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Ingredients

Instructions

  1. Step 1: Place 3 kg pork bones and 4 L water in a large stockpot, bringing to a gentle simmer over medium-low heat; skim off any foam that rises to the surface within the first 30 minutes.
  2. Step 2: Add 100 g sliced ginger, 4 smashed garlic cloves, 120 ml soy sauce, and 60 ml mirin, then reduce heat to low and simmer uncovered for 6 hours, skimming fat every hour until broth turns milky white and rich.
  3. Step 3: Strain broth through a fine-mesh sieve into a clean pot, discarding solids; return to low heat and simmer 15 minutes to concentrate flavors, then keep warm.
  4. Step 4: Cook 200 g ramen noodles in boiling salted water for 2 minutes until al dente; drain and divide into bowls.
  5. Step 5: Top noodles with 300 g sliced chashu pork, 4 thinly sliced scallions, and 4 soft-boiled eggs; pour 1 cup hot broth over each bowl until noodles are fully submerged, ensuring the broth is steaming hot when served.

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Frequently asked questions

How long does Slow-Simmered Tonkotsu Ramen with Pork Bone Broth take to make?

Total time is about 400 minutes (25 min prep + 375 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Slow-Simmered Tonkotsu Ramen with Pork Bone Broth?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep pork bones from drying out.

Can I substitute ingredients in Slow-Simmered Tonkotsu Ramen with Pork Bone Broth?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Slow-Simmered Tonkotsu Ramen with Pork Bone Broth for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Slow-Simmered Tonkotsu Ramen with Pork Bone Broth?

Japanese asian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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