Jajangmyeon: A Black Sauce Built for Thick Wheat Noodles
A glossy, near-black sauce that clings to every strand, small cubes of pork and vegetables that hold their shape, and noodles that stay springy because they were rinsed and drained before the sauce went on.
Jajangmyeon (짜장면) is one of the best-known dishes of Korean-Chinese cooking: thick, chewy wheat noodles covered in a dark sauce made from chunjang, the Korean black paste used for jajang sauce, cooked with pork belly and diced vegetables. The color is the first thing you notice, but the flavor is the point. The salty, savory depth of chunjang meets the sweetness of pork and onion, zucchini and potato, and a final cornstarch thickening turns the sauce glossy so it coats the noodles instead of pooling underneath them.
The cooking itself is a matter of timing more than technique. The sauce and the noodles are cooked separately, in two pots. The pork and the cabbage each leave the pan once and return at set moments. The noodles are rinsed and drained before the finished sauce is spooned over them. Once you see how those pieces fit together, the dish is very approachable in a home kitchen.
About This Version
The recipe below follows a single published recipe, Food Network Kitchen's jjajangmyeon (recipe courtesy of Jackie Ji Yoon Park), which makes 4–6 servings. Amounts and steps are taken from that one version only; nothing from other recipes has been mixed in. Food Network lists the recipe at 40 minutes. That is the published figure, not a measured one, and it assumes you work on several things at once.
A few editorial choices are worth stating up front:
- Water has been added to the ingredient table. The published ingredient list omits three measures of water that appear only in the method: 1 cup whisked into the sauce, 10 cups for boiling the noodles, and 2 tablespoons for the cornstarch slurry. They are listed in the table so nothing you need is missing.
- The optional chili is left out. The published list includes an optional gochugaru, but its description calls it a Korean red chile paste, so it is unclear whether a powder or a paste is meant. Rather than guess, this version omits the optional heat altogether and does not substitute gochujang or any other red seasoning.
- Cornstarch means cornstarch. It is not potato starch, and it is not Japanese katakuriko.
This recipe has not been kitchen-tested by Sekai Gohan. The step photographs illustrate each stage of the method; they are not proof of timing, doneness, quantities or food safety.
Ingredients (4–6 servings)
The eggs go on as half an egg per bowl.
This dish can contain soy (chunjang), wheat (noodles, and some chunjang products), shellfish or other seafood (oyster sauce), chicken (broth) and egg. Check the labels on each product, including any shared-facility or cross-contact statements. Keep raw pork away from ready-to-eat foods: use a separate board and knife for the pork, cut the cucumber on a clean board, and wash your hands after handling raw meat.
Equipment
- Heavy pot for the sauce
- Large pot for boiling the noodles
- Large measuring cup or jug, and a whisk
- Small bowl for the cornstarch slurry
- Slotted spoon
- Wooden spoon
- Tongs or long chopsticks
- Colander
- Two plates for holding the pork and the cabbage separately
- A cutting board for raw meat and a separate clean board for the cucumber
- Serving bowls (4–6)
Choosing Chunjang, Noodles and the Rest
Chunjang is the one ingredient that has no stand-in. It is a purchased Korean seasoning paste. You buy it; you do not ferment it at home. It is not the same as Chinese tianmianjiang (sweet bean sauce), doubanjiang, Chinese yellow soybean paste or Japanese miso, including dark miso such as hatcho miso. Any of those would change the saltiness, sweetness, fermented aroma and color enough to make a different dish. Look for it at Korean or Asian grocers under 춘장, chunjang, or "Korean black paste for jajang."
Noodles: Choose fresh, thick Korean-style wheat noodles sold for jjajang if you can find them. Cooking times vary by product, so read the pack.
Chicken broth: An unsalted chicken stock works well. If your broth is salted, don't add any extra seasoning to the sauce, because chunjang and oyster sauce already bring plenty of salt.
Oyster sauce: Brands differ in ingredients and in how concentrated they are. Check the label, especially for allergens.
Potato: Russets are floury. If you can't find them, another floury potato is a reasonable choice, but it may break down more easily. Watch the heat and the simmer so the cubes hold their shape. This swap is a household adjustment.
Zucchini: An ordinary green zucchini is fine.
Cucumber: English cucumbers are larger than many other types, so a quarter of a smaller cucumber is not the same amount. Use the weight as your guide.
Cornstarch: Use cornstarch. Potato starch thickens differently.
Method: Two Pots, and a Set Order for Removing and Returning
Prepare everything first: cut the pork, vegetables and cucumber, halve the eggs, whisk the sauce, and get the noodle water heating. While the sauce simmers and rests covered, the noodles cook in their own pot. The sauce comes back to a boil and is thickened just before serving.
The pork and cabbage each come out of the pot once. The pork goes back in after the other vegetables have browned. The cabbage waits until the very end, after the noodles are cooked, and goes back into the reboiled sauce right before thickening. Keep the two plates separate so you return each at the right moment.
Serving and Leftovers
Serve right away, while the sauce is hot and the noodles are still springy. Mix the sauce through the noodles at the table.
The recipe gives no storage time for leftovers, so we don't suggest one. Don't leave the cooked dish out at room temperature. Refrigerate leftovers right away and eat them soon.
Troubleshooting
| Problem | Likely cause | What to do |
|---|---|---|
| The sauce scorches on the bottom | Not stirred often enough during the simmer | Stir often from the moment it boils. In this version the chunjang goes in as part of a liquid sauce after the vegetables, so there is no step where the paste is fried in oil first; don't add one. |
| The vegetables are still firm after 5 minutes | Heat too low, or cubes cut larger than 1/2 inch | Treat the 5 minutes as a guide. Keep simmering, stirring, until a potato cube is tender, and cut evenly next time. |
| The potato cubes fall apart | A very floury potato, or a hard boil for too long | Simmer rather than boil hard once the vegetables are tender, and stir gently. |
| The sauce stays thin | Slurry not fully dissolved, or the sauce not boiling when it went in | Make sure the cornstarch is fully dissolved in its water and the sauce is back at a boil. Don't add dry cornstarch directly, and don't increase the amount. |
| The noodles are gummy or sticky | Not separated while boiling, or not rinsed | Separate them with tongs or chopsticks as they cook, rinse until they're no longer slippery, and drain well. |
| The sauce looks watery in the bowl | Noodles not drained well | Let the noodles drain thoroughly, and put the sauce on just before serving. |
| The pork looks done but you're unsure | Browned color is not a doneness test | Make sure the pork is thoroughly cooked before serving; surface color alone does not establish doneness. |
Variations
Food in Korea's Chinese restaurants comes in several forms of jajang. The Korea Tourism Organization (VISITKOREA) describes these variations of the dish:
- Ganjjajang: the sauce is stir-fried to order, which keeps the texture of the ingredients, and served separately from the noodles.
- Yuni-jjajang: the meat and vegetables are finely minced.
- Yuseul-jjajang: the meat and vegetables are cut into thin strips.
- Samseon-jjajang: a version with seafood.
- White and golden versions: lighter-colored variations distinct from the black sauce.
Maangchi's recipe also mentions jjajangbap, where the sauce is served over rice instead of noodles.
These are different preparations, each with its own ingredients and method. None of them is a simple swap within the recipe above, which is the everyday black chunjang style.
Background: Korean-Chinese Cooking and Incheon
The Korea Tourism Organization presents jajangmyeon as "a Korean-Chinese favorite for all ages": a noodle dish of Chinese origin that changed to suit Korean tastes. In its account, the dish took shape after the port of Incheon opened in 1883, made by Chinese immigrants in the area around the Qing concession. According to the same account, the early sauce was a brown sauce of fermented wheat and beans, and the black chunjang sauce colored with caramel became widespread in the 1950s. This is the organization's summary history. It is not a definitive record of a single origin, and it doesn't name an inventor or a first restaurant. You can read more about the country's food on our Korea page.
Jajangmyeon is related to China's zhajiangmian, but the two are not the same recipe. The Beijing-style dish uses different pastes, ground pork and its own set of vegetable toppings. The Korean version is built on chunjang, diced pork and vegetables, and a thickened, glossy sauce. Maangchi's recipe uses the same core elements of chunjang, pork belly, vegetables and a starch slurry, but its amounts and some of its ingredients differ. None of them have been carried into the recipe above.
Frequently Asked Questions
What can I use if I can't find chunjang?
There's no equivalent. Tianmianjiang, doubanjiang, Chinese yellow soybean paste and Japanese miso all change the salt, sweetness, fermented aroma and color, so the result is a different dish. Look for chunjang (춘장) at a Korean or Asian grocer. If you do experiment with another paste, treat it as a new recipe, not as jajangmyeon.
Is jajangmyeon the same as Chinese zhajiangmian?
No. The two are connected historically, but the sauce, the meat, the vegetables and the overall flavor are different. Don't swap ingredients between them.
Is it spicy?
Not this version. The published recipe lists an optional gochugaru, but it describes it as a red chile paste, which leaves it unclear what is meant. This version leaves the optional heat out entirely.
Can I serve the sauce over rice?
Maangchi's recipe mentions jjajangbap, where the sauce is served over rice. That is its own way of serving the sauce; this recipe is written for noodles.
Why do the pork and cabbage come out of the pot?
That's how this version is built. The pork comes out after browning and goes back in once the other vegetables have browned, so it finishes cooking in the sauce. The cabbage is cooked briefly and then waits until the sauce is reboiled at the end, so it isn't simmered with the rest from the start.
Why rinse the noodles in cold water?
Rinsing removes the slippery surface starch. Draining them well afterward keeps extra water from thinning the sauce in the bowl.
How long do leftovers keep?
No storage time is given for this dish, so we don't suggest one. Refrigerate leftovers right away and eat them soon. Don't leave the cooked dish out at room temperature.
Sources
- Food Network Kitchen (recipe courtesy of Jackie Ji Yoon Park), "Jjajangmyeon." The recipe followed here: the 4–6 serving version's ingredients, amounts, cut sizes, order of cooking, noodle boiling and rinsing, cornstarch thickening and serving, and the listed 40 minutes. https://www.foodnetwork.com/recipes/food-network-kitchen/jjajangmyeon-22310975
- Korea Tourism Organization (VISITKOREA), "Jjajangmyeon: A Korean-Chinese Favorite for All Ages." Jajangmyeon as a Korean-Chinese dish adapted to Korean tastes; the organization's account of the opening of Incheon port in 1883, the early brown sauce and the spread of caramel-colored black sauce in the 1950s; and the variations such as ganjjajang and yuni-jjajang. https://english.visitkorea.or.kr/svc/contents/contentsView.do?vcontsId=221247
- Maangchi, "Noodles with blackbean sauce (Jjajangmyeon 짜장면)." Comparison only: another home recipe using chunjang, pork belly, vegetables and a starch slurry with thick, chewy wheat noodles, and the mention of jjajangbap. No amounts or steps were taken from it. https://www.maangchi.com/recipe/jjajangmyeon
- Ministry of Health, Labour and Welfare (Japan), "お肉はよく焼いて食べよう" (Cook meat thoroughly before eating). Pork should not be eaten raw or undercooked and must be cooked thoroughly. https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000049964.html
