Jjajangmyeon (Korean Black Bean Noodles)

About This Recipe

Jjajangmyeon is the dish of Korean takeout, of moving-day lunches, of single people on Black Day (April 14), and of after-school treats — utterly comforting wheat noodles cloaked in a thick, glossy, almost-sweet black sauce made from chunjang, a Korean fermented black bean paste of Chinese origin. The dish arrived in the port city of Incheon in the late 19th century with Shandong Chinese immigrants and was adapted to local Korean taste: heavier on caramelized onion, lighter on heat, with pork belly cubes, diced zucchini and potato, and a finish of julienned raw cucumber and a quartered hard-boiled or soft-boiled egg perched on top. The chunjang is the soul of the sauce — a deeply fermented black soybean paste that smells funky and intense raw but transforms when fried in oil first (a crucial step called 'gi-reum-jjang-eul ginnida') into a sweet, savory, almost cocoa-like base. A starch slurry stirred in at the end gives the iconic glossy, glass-thick consistency that coats every noodle. Across Korea, jjajangmyeon is delivered piping hot in stacked metal containers by motorcycle, eaten straight from the bowl with a pair of chopsticks and a side of cubed yellow pickled radish (danmuji). Made at home, the chunjang takes the work out of it — a 30-minute weeknight dinner that tastes like a Seoul Chinese restaurant.

Ingredients

Serves 4

• 300 gpork belly or pork shoulder, cut into 1.5 cm dice
• 4 tbspneutral oil
• 5 tbspchunjang (Korean black bean paste — Sajo or CJ Beksul brand)
• 2 tbspsugar
• 1 tbspsoy sauce
• 1 tbspoyster sauce
• 2 largeonions, cut into 1.5 cm dice
• 1 smallzucchini, cut into 1.5 cm dice
• 1 smallpotato, peeled and cut into 1.5 cm dice
• 1 small piecefresh ginger, minced
• 3garlic cloves, minced
• 400 mlwater or chicken stock
• 2 tbspcornstarch mixed with 4 tbsp water (slurry)
• 1 tsptoasted sesame oil
• 500 gfresh Korean jjajangmyeon noodles (or thick udon)
• to serve: julienned raw cucumber, danmuji (yellow pickled radish), soft-boiled or hard-boiled egg quartered

Instructions

1. 1

   Pre-fry the chunjang

   In a small pan, heat 3 tbsp of the oil over medium-low heat. Add the chunjang and fry, stirring constantly, for 3–4 minutes — the raw funky smell will mellow into something sweet and almost chocolatey. Stir in the sugar to caramelize for 1 minute, then set aside.

   This pre-frying step is non-negotiable. Raw chunjang tastes harsh and bitter; pre-fried chunjang tastes like restaurant jjajangmyeon.

2. 2

   Brown the pork

   In a large wok or wide skillet, heat the remaining 1 tbsp oil over medium-high heat. Add the pork dice and brown for 5–6 minutes until golden on the edges and the fat has rendered. Don't crowd — work in two batches if needed.

3. 3

   Add aromatics and vegetables

   Add the diced onion to the pork. Cook 3–4 minutes until the onion is just softened and starting to caramelize at the edges. Add the ginger, garlic, potato and zucchini and cook 2 more minutes.

4. 4

   Add the pre-fried chunjang

   Stir the pre-fried chunjang into the pork and vegetables, coating everything thoroughly in the dark sauce. Cook 1 minute to marry the flavors.

5. 5

   Simmer

   Pour in the water/stock, soy sauce and oyster sauce. Bring to a simmer, cover and cook 8–10 minutes until the potato is tender. The sauce should be aromatic and deeply dark.

6. 6

   Thicken with slurry

   Stir the cornstarch slurry to recombine, then pour into the simmering sauce while stirring. The sauce should thicken to a glossy, gravy consistency within 30 seconds — thick enough to coat the back of a spoon. Stir in the sesame oil and remove from heat.

7. 7

   Cook the noodles

   Bring a large pot of water to a rolling boil. Cook the fresh noodles 4–5 minutes until just tender (check package — fresh noodles cook fast). Drain and rinse briefly with hot water to remove starch and prevent sticking.

8. 8

   Assemble

   Divide the noodles among 4 deep bowls. Ladle a generous amount of the black sauce over each, leaving some noodles peeking out at the edge. Top with julienned cucumber, a few cubes of danmuji and a quartered egg. Serve immediately with a side of more pickled radish and a glass of cold beer. Eat by mixing thoroughly before the first bite — every Korean child learns this.

Variations

• •

  Samseon jjajang — 'three treasures' version with seafood (shrimp, squid, mussels) instead of pork.

• •

  Gan-jjajang — a 'dry' version where the sauce isn't thickened with slurry, served with extra-thick noodles.

• •

  Jjajangbap — same sauce over white rice instead of noodles; popular as a quick lunch.

• •

  Vegan jjajangmyeon — skip pork, double the mushrooms (king oyster, shiitake) and use vegetarian oyster sauce.

Storage

Sauce keeps 4 days refrigerated and reheats beautifully — actually improves overnight. Always store sauce and noodles separately. Freeze the sauce up to 2 months. Garnishes must be added fresh.

Frequently Asked Questions