Tonkotsu Ramen Recipe

Prepare bones: Rinse bones under cold water. In a large stockpot, place bones and cover with cold water. Add 2 tablespoons rice vinegar. Bring to a rolling boil for 10 minutes to purge impurities. Drain and discard the blanching water; rinse bones and pot thoroughly.

Initial fill: Return cleaned bones to the pot and add approximately 6 liters (6000 ml) fresh cold water to cover. Add onion halves, smashed ginger, smashed garlic, scallion whites, kombu, and dried shiitake.

Simmer long and hard: Bring to a vigorous boil uncovered to break down collagen and emulsify marrow into the broth. Reduce heat only enough to maintain a steady rolling simmer; partially cover to control heavy splatter. Simmer for 8–12 hours, occasionally skimming large foam and fat early on (first 1–2 hours). Every 2–3 hours, stir and gently press bones against the pot to help release marrow. If liquid reduces too much, top with hot water to keep bones submerged.

Strain and season: After 8–12 hours the broth should be milky and creamy. Remove solids with a slotted spoon, then pass the broth through a fine-mesh strainer or cheesecloth into a clean pot. Discard solids. Taste and add 2 teaspoons salt, adjusting to preference. Keep hot or cool and refrigerate for up to 3 days (or freeze).

Combine tare ingredients: In a small saucepan combine 120 ml dark soy sauce, 60 ml mirin, 60 ml sake, 120 ml dashi, 1 tsp sugar and optional 1 tsp fish sauce. Bring just to a gentle simmer to meld flavors and dissolve sugar, then remove from heat. Cool to room temperature and set aside. This mixture is concentrated; use about 60–80 ml tare per bowl depending on taste.

Soft-boiled Soy Sauce Eggs (Ajitsuke Tamago)

Bring a medium pot of water to a rolling boil. Gently lower 4 room-temperature eggs into boiling water and boil 6 minutes for slightly runny yolks (6–7 minutes depending on size). Immediately transfer eggs to an ice bath for 5 minutes. Peel gently. Make a marinade by mixing 120 ml soy sauce, 60 ml mirin, and 60 ml water (or use some reserved tare). Submerge peeled eggs in marinade in a shallow container and refrigerate at least 4 hours or up to overnight. Reserve eggs in marinade until ready to serve.

Chashu or Sliced Pork

If using pre-made chashu: warm slices gently in a skillet or in the hot broth before serving. If making quick roasted pork shoulder: season 400 g pork with salt and pepper, sear all sides, then roast at 160°C/325°F for 1–1.5 hours until tender; slice thinly.

Noodles and Vegetables

Bring a separate pot of water to a rolling boil for noodles. Cook fresh ramen noodles according to package instructions (usually 90–120 seconds) until just tender. Meanwhile blanch bean sprouts for 30–45 seconds in boiling water and drain. Warm menma if refrigerated by briefly heating in a small pan or microwave.

Prep garnishes: Slice scallions thinly, toast sesame seeds if desired, and cut nori into quarters.

Make garlic oil: Heat 60 ml neutral oil in a small saucepan over medium-low heat. Add thinly sliced garlic and cook gently until golden brown and crisp (watch to avoid burning). Remove garlic crisps and reserve. Optionally add 20 g black/charred garlic and blend briefly with the oil for a dark, smoky mayu; let cool. Strain if you prefer a clear oil. Use 1–2 teaspoons per bowl.

Warm bowls: Pre-warm serving bowls with hot water then discard water.

Add tare: Spoon 60–80 ml tare into the bottom of each bowl (adjust to taste).

Add broth: Reheat tonkotsu broth to a gentle simmer and ladle approximately 600–700 ml hot broth into each bowl over the tare; stir to combine.

Add noodles and toppings: Immediately add cooked ramen noodles to the bowl. Arrange 3–4 slices chashu (or chosen protein) on top, half a soy-marinated soft-boiled egg per bowl, 2–3 tablespoons menma, a small handful of blanched bean sprouts, a sheet or quarter-sheet of nori, a sprinkle of sliced scallions, toasted sesame seeds, and a drizzle (about 1 tsp) of aromatic oil or sesame oil. Finish with a pinch of freshly ground black pepper to taste.

Serve immediately: Serve hot so noodles retain texture. Provide additional tare, chili oil, or sesame seeds at the table.