Seafood Japchae Recipe (Haemul Japchae)
Japchae is Korea’s iconic sweet-savory stir-fried glass noodle dish—silky, springy, and packed with vegetables. This version leans into the sea: abalone, octopus, and shrimp make it feel extra special without being fussy.
What makes this seafood japchae recipe worth bookmarking is the texture. You’ll use a “doesn’t bloat” noodle method—glass noodles without pre-soaking, no cold rinse, and a quick oil-coat—so the noodles stay pleasantly chewy even after they sit.
It’s a fantastic pick for a party menu (and surprisingly make-ahead friendly), because each component is cooked briefly, cooled, and then tossed together at the end for maximum gloss and minimum wateriness.
What is Seafood Japchae?
Japchae is one of those dishes that looks like a celebration the moment it hits the table: glossy glass noodles, colorful vegetables, and that savory-sweet Korean seasoning that makes you keep “taste-testing” straight from the pan. This version is seafood-forward—tender abalone, octopus, and shrimp—so it feels extra special without needing restaurant skills.
The best part is the texture. This seafood japchae recipe is built around a few small moves that make a big difference: glass noodles without pre-soaking, no cold rinse, and a quick oil-coat so the noodles stay springy instead of turning soft and bloated.
If you’re planning seafood japchae for a party menu (make-ahead friendly), this method is especially helpful. Everything is cooked briefly, cooled, and combined at the end—so you get clean flavors, bright vegetables, and noodles that stay chewy long after you’ve set the platter down.
What You’ll Need to Make Seafood Japchae Recipe
Tools & equipment (checklist)
- Large pot (for noodles and blanching seafood)
- Colander or fine-mesh strainer
- Large skillet or wok
- Tongs or long chopsticks (great for tossing glass noodles)
- Cutting board + sharp knife
- Large plate or sheet pan (to spread ingredients out and cool fast)
- Measuring spoons
Pantry staples
- Soy sauce
- Sesame oil
- Sugar
- Black pepper
- Toasted sesame seeds
- Neutral cooking oil
- Salt
Why You’ll Love Seafood Japchae
- Bouncy noodles that don’t turn mushy, even after sitting
- Seafood stays tender thanks to quick ginger blanching and a short stir-fry
- Colorful vegetables with real crunch (hello, cucumber)
- Party-worthy centerpiece that still feels home-cook friendly
- Great texture contrast: chewy noodles, meaty shiitake, crisp veg
- Easy to prep in stages so final tossing is fast
Ingredients (Serves 3)
Seafood
- 2 abalone, cleaned and thinly sliced (about 200–250 g total after cleaning)
- 100 g cleaned octopus (small pieces or sliced)
- 7–8 shrimp, peeled and deveined (about 100 g)
Vegetables
- 1 medium cucumber, julienned
- 1/2 medium carrot, julienned
- 2 red chilies, thinly sliced
- 3 shiitake mushrooms, thinly sliced
Noodles
- 80 g dangmyeon (Korean sweet potato glass noodles), dried
Aromatics
- 10 g ginger, sliced (divide between blanching + noodle water)
- 1 1/2 tsp minced garlic
Sauce & finishing
- 3 tbsp soy sauce (45 ml)
- 2 tbsp sesame oil (30 ml)
- 1 tbsp sugar (12 g)
- 1/2 tbsp oyster sauce (7.5 ml)
- Black pepper, to taste
- 1–2 tbsp toasted sesame seeds
For salting cucumber
- 1/2 tsp salt (plus more as needed)
For cooking
- 3 tbsp scallion oil or aromatic oil (45 ml), divided
- 1 tsp neutral oil (5 ml), for the noodle water
- 1 tbsp salt (15 ml), for blanching water
- 1 tbsp lemon juice (15 ml)
Method / Instructions
-
Prep the vegetables.
Slice the shiitake mushrooms thinly. Julienne the carrot and cucumber. Slice the red chilies thinly.
-
Salt the cucumber (key for crunch and less water).
Toss the julienned cucumber with 1/2 tsp salt and let sit for 10 minutes. Then squeeze firmly to remove moisture and set aside. -
Prep the seafood.
- Abalone: remove innards, trim tough parts, and slice a bit thicker than the vegetables.
- Shrimp: butterfly or split and remove the vein.
- Octopus: cut into bite-size pieces if needed.
Toss the seafood with lemon juice and set aside while you cook the vegetables.
- Abalone: remove innards, trim tough parts, and slice a bit thicker than the vegetables.
-
Stir-fry vegetables separately, then cool.
Heat a large skillet over medium heat with a small drizzle of scallion oil/aromatic oil.- Stir-fry shiitake with a pinch of salt until fragrant and just softened.
- Stir-fry carrot briefly until crisp-tender.
- Stir-fry red chili briefly (just to take the raw edge off).
- Stir-fry the squeezed cucumber quickly (keep it snappy).
Spread the cooked vegetables on a large plate or sheet pan to cool fast.
- Stir-fry shiitake with a pinch of salt until fragrant and just softened.
-
Ginger-blanch the seafood for tender texture.
Bring a pot of water to a boil. Add ginger slices and 1 tbsp salt.
Add the seafood and blanch about 45–60 seconds, just until it turns opaque and firms slightly. Drain very well. -
Quick stir-fry the seafood (avoid wateriness).
Heat the skillet with a little scallion oil/aromatic oil. Add minced garlic and oyster sauce, then add the drained seafood.
Stir-fry for about 1 minute over medium heat. Spread out to cool (cooling prevents steam from turning your japchae watery). -
Cook the glass noodles without pre-soaking (the “doesn’t bloat” method).
Bring fresh water to a boil. Add a few ginger slices and 1 tsp neutral oil.
Add dangmyeon and cook 6–8 minutes (taste for chew). Drain well.
Do not rinse with cold water. Let the noodles sit in the colander for a moment to release heat and moisture, then toss with about 2 tbsp scallion oil/aromatic oil to coat. -
Season the noodles first (so they’re never bland).
While noodles are still warm (not piping hot), add:- soy sauce (45 ml)
- sesame oil (30 ml)
- sugar (12 g)
- black pepper
Toss until evenly seasoned.
- soy sauce (45 ml)
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Combine and finish.
Add the cooled vegetables and cooled seafood to the seasoned noodles. Toss gently but thoroughly.
Taste and adjust seasoning if needed, then finish with toasted sesame seeds.
Tips / Variations / Serving Suggestions
- Make-ahead hack: Prepare noodles + vegetables 2 days ahead. Store separately to avoid moisture transfer—assemble just before serving.
- Seafood swap: Use canned tuna/squid instead of abalone for budget-friendly batches.
- Side pairing: Serve with Cucumber Banchan (crisp and cooling) to balance flavors (click here for the recipe).
- No-odor secret: For briny-sea taste, simmer ginger-lemon water 10 mins before adding seafood—it’s the science behind Korean tradition on texture/flavor synergy.
Frequently Asked Questions
If you want a show-stopping noodle dish that stays chewy and glossy, this seafood japchae recipe delivers—especially with the no-soak noodle method and the quick, tender seafood cook.
When you make it, round out your table with a Korean cucumber banchan, and if you’re craving the classic flavor profile next time, try your classic beef japchae. For a faster weeknight slurp, follow it up with an easy Korean noodle dish from your noodle collection.
