
Jjajangmyeon (Korean Black Bean Noodles with Pork and Vegetables)
Jjajangmyeon is a Korean-Chinese noodle dish of thick chewy wheat noodles topped with a glossy black sauce of fried chunjang (Korean fermented black soybean paste), pork belly, onions, potato, zucchini, and cabbage. The dish was developed in 1905 by Chinese immigrants at the Gonghwachun restaurant in Incheon's Chinatown, adapted from Beijing zha jiang mian to suit Korean tastes — sweeter, with caramelized chunjang and starchier vegetables. Today it is one of Korea's national comfort foods, sold in every neighbourhood and traditionally eaten on Black Day (April 14) by single people who got no Valentine's gift. Active work is 35 minutes, no long simmer needed. Serves 4 with 200 g noodles and 250 ml sauce per portion, topped with julienned cucumber for fresh contrast.
Ingredients
- 400 gpork belly
- 75 gchunjang
- 200 gyellow onion
- 200 gpotato
- 250 gzucchini
- 150 ggreen cabbage
- 4 clovesgarlic cloves
- 30 mlneutral oil
- 10 mlsoy sauce
- 15 gsugar
- 600 mlwater
- 20 gpotato starch
- 5 mltoasted sesame oil
- 800 gjjajangmyeon noodles
- ½ piececucumber for serving
Method
- Prep all ingredients before starting. Cut the pork belly into 1.5 cm cubes, the onion, potato, and zucchini into 1 cm cubes, and the cabbage into 2 cm pieces. Mince the garlic. Cut the cucumber into matchsticks for the garnish. Mix the potato starch with 4 tbsp cold water in a small bowl to make a slurry — set aside. This dish cooks fast once the heat is on, so all chopping must be done first.
- Heat a large wok or deep skillet over medium heat. Add the pork belly cubes with 1 tbsp of the neutral oil and cook for 5 to 6 minutes, stirring occasionally, until the pork edges are golden and 3 to 4 tbsp of fat have rendered out. Do not drain — that rendered pork fat is the flavour base. Push the pork to the side of the pan.
- Fry the chunjang. Add the remaining 1 tbsp neutral oil to the cleared centre of the wok. Spoon the chunjang into the hot oil and spread it flat with a spatula. Fry for 2 to 3 minutes, stirring every 30 seconds, until the paste turns glossy and smells strongly caramel-sweet rather than raw and sour. Critical: do not skip this step — raw chunjang tastes flat and bitter, fried chunjang is the entire flavour foundation. Do not let it burn either; burnt chunjang is more bitter than raw.
- Add the diced onion and minced garlic to the wok and stir everything together for 1 minute. The onion should soften slightly without browning. Add the potato cubes and stir-fry for 2 minutes — the chunjang will start coating everything in glossy black. Add the cabbage and zucchini, stir for another minute.
- Add the soy sauce and sugar, stir to combine. Pour in the 600 ml water, stir thoroughly to dissolve the chunjang into a uniform sauce, then bring to a gentle simmer. Cover and cook for 8 to 10 minutes over medium-low heat, until the potato is fork-tender. Stir once or twice to prevent sticking on the bottom.
- Stir the potato starch slurry again (it settles fast) and pour it into the simmering sauce while stirring constantly. The sauce will thicken to a glossy gravy consistency in 30 to 60 seconds. This is the signature jjajangmyeon texture — the sauce should coat the back of a spoon thickly and look glossy, not watery. Turn off the heat and stir in the toasted sesame oil for finish. Cover to keep warm.
- Cook the noodles. Bring a large pot of water to a rolling boil — no salt is needed. Add the fresh jjajangmyeon noodles and cook 4 to 5 minutes (or per package directions), stirring once to prevent clumping. Fresh noodles cook faster than dried; the centre should still have a slight bite, no more. Drain and rinse briefly under cold water for 10 seconds — this removes excess surface starch and makes the noodles bouncier.
- Assemble and serve immediately. Divide the noodles between 4 deep bowls, ladle a generous portion of the black bean sauce over each, and top with a small handful of julienned cucumber on one side. Serve at once with chopsticks and a spoon — the sauce is too thick for chopsticks alone. Traditional accompaniments: pickled yellow danmuji radish, raw onion wedges with chunjang for dipping, and a glass of cold water or barley tea. Mix the noodles thoroughly with the sauce before eating, every strand should turn black.
FAQ
Chunjang (춘장) is a Korean fermented black soybean paste with wheat flour and caramel sauce, developed by Chinese immigrants in Incheon in 1905 specifically for Korean tastes. It is jet black, salty, slightly bitter raw, and gently sweet after frying. This is an ingredient-specific paste for jjajangmyeon — without it the dish becomes something else. Alternatives and their compromises: Chinese tianmianjiang (sweet bean sauce) gives a decent result, but you end up with Chinese zha jiang mian, not Korean jjajangmyeon — different flavour profile, sweeter and less bitter; Lee Kum Kee Black Bean Sauce categorically does not work, it has a completely different structure and flavour (it is fermented black beans douchi, not soybean paste). Best chunjang brands: Sajo, CJ (Beksul), Sempio, Obok — all available at Korean grocers, Asian markets, or online. A 250 to 300 g tub costs 5 to 8 dollars and keeps refrigerated for 3 months after opening.
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