Thick noodles coated in rich black bean sauce with tender pork belly, cabbage, zucchini, and aromatics. This easy Jajangmyeon recipe is ready in 30 minutes making it perfect for busy weeknights. Every savory bite delivers a chewy texture and pure comfort.
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This classic bowl of Jajangmyeon (자장면) traditionally accompanies tangsuyuk to celebrate milestone occasions like graduations or birthdays. It remains my absolute favorite meal to eat while watching a good Korean drama. During my kitchen testing, frying the chunjang (fermented black bean paste) in oil is the ultimate secret to removing its natural bitterness and achieving a glossy sauce.
Why My Recipe Works
- Pork Fat Rendering: Searing the pork belly extracts natural fat to fry the aromatics and black bean paste for intense savory depth.
- Staggered Vegetable Additions: Splitting the vegetable cooking times ensures a portion softens into the sauce while the rest retains a crisp-tender bite.
- Cornstarch Slurry Gelatinization: Whisking the cornstarch mixture into the bubbling black bean paste base creates a glossy, thick glaze that clings to the noodles.
Ingredients & Substitutes
Exact ingredient measurements are listed in the recipe card at the bottom of this page.
- Fresh Korean Wheat Noodles: Thick, white noodles found in the refrigerated section of Korean markets. (Sub: Udon)
- Pork Belly: Slice into small, uniform cubes to ensure even fat rendering. (Sub: Diced pork shoulder or ground pork)
- Chunjang (Korean Black Bean Paste): Key for providing the signature deeply savory, earthy umami flavor profile and dark color. (Sub: Chinese black bean paste)
- Vegetable Oil: Use a high-smoke-point oil for safe high-heat frying. (Sub: Canola or avocado oil)
- Onion: Chop into uniform pieces to ensure even cooking. (Sub: 2 small shallots)
- Green Cabbage: Do not sub with napa cabbage, as it releases excess water diluting the sauce.
- Zucchini: Dice into bite-sized cubes. (Sub: Yellow squash)
- Green Onion: Slice finely, using both the white and green parts.
- Oyster Sauce: Key for adding concentrated umami and savory flavor. (Sub: Vegetarian stir-fry sauce)
- Cold Water
- Cornstarch: Key for binding water and fat into a glossy, cohesive glaze that coats the noodles. (Sub: Potato starch)
- White Granulated Sugar: Balance the salty flavors of the chunjang. (Sub: Cane sugar)
- Cucumber: Slice into thin matchsticks for a crisp garnish. (Sub: Daikon radish)
Note: Asian ingredients are typically available at most Korean and Asian grocery stores or check online.
Instructions
Below are step-by-step instructions on how to make jajangmyeon:
- Prepare the Slurry: Whisk the sugar, cornstarch, and water together in a bowl until smooth. Set aside.
- Fry the Black Bean Paste: Heat the vegetable oil in a large pan over medium heat. Fry the black bean paste for 3 minutes, stirring constantly. Pour the paste through a strainer to remove the excess oil, reserving 1 tablespoon of oil in the pan.
- Cook the Pork: Add the pork belly to the reserved oil and sear until browned and the fat has rendered.
- Cook the Vegetables: Stir in the onion and green onions, cooking until translucent. Add the zucchini and green cabbage and sauté until tender.
- Make the Sauce: Return the strained black bean paste to the pan. Pour in the cornstarch slurry and simmer on low heat until the sauce becomes thick and glossy. Stir in the oyster sauce.
- Finish the Dish: Bring a separate pot of water to a boil and cook the fresh wheat noodles until al dente, about 3-4 minutes. Drain thoroughly without rinsing, then divide the noodles among serving bowls. Ladle the hot black bean sauce over the noodles, garnish with julienned cucumber, and toss to combine before serving.
Expert Tips
- Dry washed vegetables completely to prevent excess moisture from steaming the sauce.
- Lower the heat before adding the slurry to prevent instant clumping.
- Whisk the cornstarch slurry right before pouring to incorporate settled starch.
- Boil noodles at the end to ensure they do not clump while sitting.
- Keep extra boiling water handy to thin the sauce if it thickens too fast.
Variations
- Vegetarian Adaptation: Swap the pork belly for cubed extra-firm tofu and use a mushroom-based vegetarian stir-fry sauce instead of oyster sauce.
- Spicy Twist: Stir 1 teaspoon of gochugaru (Korean chili flakes) into the sauce base to cut through the rich paste.
- Chicken Swap: Replace the rich pork belly with lean ground chicken or diced chicken thighs for a lighter meat option.
Pairing Suggestions
Korean jajangmyeon pairs well with:
- Danmuji (Vegetable Side): This crisp pickled radish cuts through the rich black bean paste to cleanse the palate.
- Tangsuyuk: This crispy Korean sweet and sour pork provides a crunchy texture contrast to the chewy noodles.
- White Rice: This neutral steamed rice absorbs the leftover savory black bean sauce at the bottom of the bowl.
Storage & Reheating
- Refrigerator: Store the black bean sauce and noodles separately in an airtight container for up to 4 days.
- Freezer & Thawing: Freeze only the sauce for up to 3 months, then thaw completely in the refrigerator overnight before heating. Do not freeze the noodles and prepare these closer to serving.
- Reheating Methods: Warm the sauce in a skillet over medium heat for 5 minutes with a splash of water, or microwave on high for 2 minutes, then toss with freshly boiled noodles.
FAQ
Bitter sauce occurs if the chunjang (black bean paste) was not fried long enough or if it scorched on high heat. Frying the paste in oil over medium heat for a full 2 to 3 minutes is necessary to mellow the raw bitterness. If your final sauce tastes bitter, stir in an extra teaspoon of white sugar to balance the flavors.
The sauce thins out if the vegetables were wet when added to the pan, causing them to steam instead of sauté. It also happens if the noodles are not drained thoroughly, as excess boiling water dilutes the cornstarch glaze. Always dry your vegetables completely before cooking and shake the drained noodles well.
Yes, but you must store the sauce and the noodles in separate containers. If stored together, the thick wheat noodles will absorb the moisture from the sauce, becoming bloated and soggy. Cook the sauce ahead, refrigerate it, and boil fresh noodles right before you serve.
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📖 Recipe
Easy 30-min. Jajangmyeon (Korean Black Bean Noodles)
Ingredients
- 1.20 lbs thick Korean wheat noodles fresh kind
- 0.65 lbs pork belly diced into ½" pieces
- 1 small onion finely diced
- 1 cup green cabbage chopped
- 1 cup zucchini small diced
- 2 green onion finely chopped
- ⅓ cup Korean roasted black bean paste (Chunjang)
- 3 tablespoon vegetable oil any neutral oil
- 1 tablespoon oyster sauce
- ¾ cup cucumber julienned, optional garnish
Cornstarch Slurry:
- 2 cups water cold
- 2 tablespoon cornstarch
- 2 tablespoon white granulated sugar
Instructions
- Prepare the Slurry: Whisk the sugar, cornstarch, and water together in a bowl until smooth. Set aside.
- Heat the vegetable oil in a large pan over medium heat. Fry the black bean paste for 3 minutes, stirring constantly. Pour the paste through a strainer to remove the excess oil, reserving 1 tablespoon of oil in the pan.
- Add the pork belly to the reserved oil and sear until browned and the fat has rendered.
- Stir in the onion and green onions, cooking until translucent. Add the zucchini and green cabbage and sauté until tender.
- Return the strained black bean paste to the pan. Pour in the cornstarch slurry and simmer on low heat until the sauce becomes thick and glossy. Stir in the oyster sauce.
- Bring a separate pot of water to a boil and cook the fresh wheat noodles until al dente, about 3-4 minutes. Drain thoroughly without rinsing, then divide the noodles among serving bowls. Ladle the hot black bean sauce over the noodles, garnish with julienned cucumber, and toss to combine before serving.
Xp
Just a question, can you freeze the sauce without the vegetables?
Christie Lai
Yes, that would work! A fine sieve will help strain out the vegetables so you're left with the sauce to freeze.
AliceK
This recipe looks wonderful! I do have a question about the pork belly. It isn't easy to find in my area. I know that it is the same cut that is used for making bacon. Could I substitute bacon, or just use a fatty piece of boneless pork?
christieathome
Thanks so much Alice! Yes, feel free to substitute with pork loin, pork shoulder or ground pork/beef.
Kathryn
Do you need to add cornstarch?
christieathome
Sorry for the delayed reply! Yes, it's needed to help thicken the sauce.
Kerrie
Thank you so much! You are a life-saver! Every single recipe for this says boil noodles per instructions on the package. My package doesn't have any english except for an ingredient sticker. Without your recipe I was going to have to check the noodles every minute until they were done. Thanks again!!
christieathome
Thank you so much for making my recipe Kerrie! Glad I could help with these instructions 🙂
Never Ending Journeys
What a delicious noodle dish! I like the idea of putting the black beans on top, too!
Heidi | The Frugal Girls
I really liked your idea to use chicken as the protein. That really allows the yummy flavors of your sauce to come through! 😋
Safia
Loved all the historical facts behind this recipe and your own feelings. The metric measurements helped massively as well as the tips. Thumbs up from me!!!
Christie Lai
Thanks so much for your kind words, Safia! So glad I could share the background and my personal experience with this dish 🙂 Also glad the metric conversion tool has been helpful.
Vivian Wan
Finally my determination to get all the ingredients did not fail me. Made this and it was a hit! I used pork belly instead of chicken and it was so delicious. Definitely satisfied my jajangmyeon craving
christieathome
Thanks so much for your kind review Vivian! I'm so glad you enjoyed this recipe and having it with pork belly is such a delicious decision! 🙂 Thanks again!
Josiah - DIY Thrill
These noodles look so delicious!
Molly
These noodles were SOOOO BOMB!!! I tried it and it was so easy to make too.