Korean Braised Mackerel and Radish (Godeungeo Jorim)

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Korean Braised Mackerel and Radish (Godeungeo Jorim)

Stepping into my mother’s apartment in Seoul on a crisp autumn evening, the fragrance hits you before you even untie your shoes. It is the rich, savory aroma of caramelized soy sauce, pungent garlic, spicy red pepper flakes, and the deep, comforting oil of simmered fish. On the stove sits a wide, blackened pot bubbling away with godeungeo jorim (braised mackerel and radish), a dish that defines home cooking across South Korea.

Mackerel is an affordable, oil-rich fish loved in Korean households. While grilled mackerel is a breakfast staple, braising it with thick slabs of Korean radish yields something far more profound. As the dish simmers, the fatty fish releases its savory oils, while the radish sheds its natural sweetness, softening until it absorbs the spicy broth like a sponge. In Korean home cooking, many of us actually fight over the melt-in-your-mouth radish even more than the fish itself.

If you have ever been intimidated by cooking oily fish at home or ended up with a metallic, overly fishy braise, this recipe will change your perspective. By using a few simple Korean kitchen tricks—like layering the vegetables to shield the fish and adding a touch of fermented soybean paste—you get perfectly tender, flaky fish enveloped in a rich, complex sauce with zero harshness.

Why This Works

• Radish protection layer: Placing thick rounds of Korean radish at the bottom of the pot creates a physical barrier that prevents the fish skin from scorching while allowing the radish to slowly braise in the rich juices.
• Doenjang odor control: A small tablespoon of doenjang (Korean fermented soybean paste) in the braising sauce neutralizes strong, unpleasant fish odors without making the dish taste like miso soup.
• Two-stage braising: Pre-cooking the hard radish in seasoned stock before adding the delicate fish guarantees the radish becomes buttery soft without overcooking the mackerel into toughness.

Ingredients

• 600 g (about 1.3 lbs) fresh or thawed mackerel (cut into 2-inch crosswise steaks or fillets)
• 400 g (about 14 oz) Korean radish (mu), peeled and cut into 1/2-inch thick half-moons
• 150 g (about 1 medium) yellow onion, cut into 1/2-inch slices
• 3 stalks green onion (about 60 g / 2 oz), cut into 2-inch long pieces
• 1 fresh red chili pepper (about 10 g / 0.35 oz), sliced diagonally
• 1 fresh green chili pepper (about 10 g / 0.35 oz), sliced diagonally
• 600 ml (about 2.5 cups) anchovy kelp stock or plain water

For the Spicy Braising Sauce:

• 3 tbsp (about 24 g) Korean chili flakes (gochugaru)
• 4 tbsp (60 ml) soy sauce
• 1 tbsp (about 20 g) Korean soybean paste (doenjang)
• 2 tbsp (about 30 g) minced garlic
• 1 tsp (about 5 g) finely minced fresh ginger
• 2 tbsp (30 ml) Korean green plum syrup (maesil-cheong) or mirin
• 1 tbsp (15 ml) sugar
• 1 tbsp (15 ml) toasted sesame oil

Substitutions

Finding traditional Korean ingredients in a Western grocery store is easier than ever, but you can effortlessly swap items if needed:

Korean Radish (Mu): Korean radish is firm, dense, and sweet. Japanese daikon is the closest substitute and readily available. If neither is present, small white turnips or even peeled red radishes will work, though they cook slightly faster.

Korean Plum Syrup (Maesil-cheong): This tart, sweet syrup adds brightness and cuts fishiness. You can substitute equal parts mirin combined with half a teaspoon of fresh lemon juice or apple juice.

Mackerel Options: Fresh or flash-frozen Norwegian mackerel (often sold at Asian markets like H-Mart or standard supermarket seafood counters) works best due to its high fat content. If mackerel is unavailable, sablefish (black cod), fresh salmon steaks, or yellowtail are fantastic alternatives for this spicy sauce.

Doenjang: If you cannot find Korean soybean paste (sold in square brown tubs by brands like CJ Haandand or Sunchang), mild Japanese yellow or red miso paste can fill in, though it is slightly less pungent.

How to Make It

1. Prepare the braising sauce: In a medium bowl, combine the gochugaru, soy sauce, doenjang, minced garlic, minced ginger, plum syrup, sugar, and toasted sesame oil. Stir briskly until smooth. Why: Combining the dry spices and pastes beforehand allows the gochugaru to hydrate and ensures the intense flavors disperse evenly throughout the liquid rather than clumping onto the fish.
2. Pre-cook the radish: Arrange the thick half-moons of radish flat along the bottom of a wide, heavy-bottomed pot or shallow dutch oven. Pour the anchovy kelp stock over the radish, then stir in half of your prepared braising sauce. Cover with a lid and bring to a boil over medium-high heat. Once boiling, lower the heat to medium and simmer for 10 to 12 minutes, until the radish is translucent around the edges but still firm in the center. Why: Radish takes twice as long as mackerel to soften. If you cook them together from the start, the fish flesh will turn dry and rubbery long before the vegetable reaches its proper melt-in-your-mouth texture.
3. Layer the mackerel and aromatics: Gently lay the mackerel pieces skin-side up over the bed of partially cooked radish. Spoon the remaining braising sauce directly over top of each piece of fish. Scatter the sliced onions, green onions, and chili peppers over and around the fish. Why: Placing the fish over the radish keeps it from contacting the hot bottom of the pan, reducing scorching risks and keeping the fish gently steamed from below.
4. Braise uncovered and baste: Turn the heat up to medium. Leave the pot uncovered for the first 5 minutes of this step. Using a large spoon, scoop up the red braising liquid from the sides of the pot and spoon it continuously over the fish and aromatics. Why: Leaving the pot uncovered early in the fish cooking process allows volatile fishy compounds to evaporate into the steam rather than trapping them inside the pot. Basting distributes heat and coats the fish in a glossy glaze.
5. Finish cooking covered: Cover the pot partially with a lid, leaving a small crack open. Reduce heat to medium-low and simmer for an additional 10 to 12 minutes. Check occasionally to ensure the liquid hasn’t boiled dry; the sauce should reduce down to a thick, glossy liquid that pools around the radish. The dish is done when a knife glides through the thickest part of the radish with zero resistance. Why: A partial cover maintains a gentle simmer, concentrating the flavors while tenderizing the fish skin.
6. Rest and serve: Remove the pot from heat and let it rest, uncovered, for 3 to 5 minutes before serving. Why: Resting allows the fish juices to redistribute and gives the radish a final chance to soak up the dark, flavorful sauce as it cools slightly.

Tips from a Korean Kitchen

Soak the fish if it’s extra fishy: If you are sensitive to oily fish or are using thawed frozen mackerel, soak the cut pieces in cold water mixed with a tablespoon of white vinegar or the leftover starch water from rinsing rice (*ssalttwul*) for 10 minutes before cooking. Pat thoroughly dry with paper towels. This removes surface blood and cuts down strong odors instantly.

Choose fatty fish over lean cuts: High-fat content is what makes braised korean mackerel so juicy and tender. Look for fish skin with strong, vibrant dark blue zigzag stripes—a hallmark of cold-water Atlantic mackerel, which carries rich, healthy fats perfect for slow braising.

Resist over-stirring: Once the fish goes into the pot, do not stir with a spatula or spoon down into the bottom layer. Mackerel grows fragile as it cooks, and you risk breaking the fish pieces into fragments and mashing the delicate radish. Basting with a spoon is all the movement this dish needs.

Serve with plain white rice: This dish is purposefully seasoned to be bold, salty, spicy, and slightly sweet—what Koreans call *bap-doduk* (a “rice thief”). It is meant to be eaten alongside spoonfuls of hot, plain short-grain white rice to balance the intensity.

Storage

Refrigeration: Store leftover godeungeo jorim in a tight-sealing glass container in the refrigerator for up to 3 days. Glass is preferred over plastic, as the red chili oil and garlic will stain and leave lingering aromas in plastic containers.

Reheating: Transfer the leftovers into a small saucepan, add 2 to 3 tablespoons of water or fresh stock to loosen the cold sauce, cover, and warm over medium-low heat until heated through (about 6-8 minutes). Avoid microwave heating if possible, as it can make mackerel rubbery and release a strong fish smell.

Freezing: Freezing cooked godeungeo jorim is not recommended. While the fish freezes fine, cooked radish becomes watery, spongy, and unappealing upon thawing.

FAQ

Can I use canned mackerel for godeungeo jorim?

Yes, canned mackerel works surprisingly well for a fast weeknight dinner. Since canned fish is already fully cooked and quite fragile, simmer your radish and sauce base until the radish is almost completely tender (about 15 minutes) before gently adding the drained canned mackerel. Braise for just 5 minutes to warm the fish through and coat it in sauce.

Why is my braised mackerel dish coming out too fishy?

Excessive fishiness usually happens for three reasons: using old fish, cooking with the lid tightly closed the entire time, or skipping aromatic ingredients. Always ensure your fish is fresh, simmer uncovered during the first few minutes of fish cooking to let steam carry away strong vapors, and never skip the minced ginger and fermented soybean paste (*doenjang*).

Can I make this dish non-spicy for kids?

To make a mild, savory version, eliminate the Korean chili flakes (*gochugaru*) and chili peppers entirely. Increase the soy sauce by 1 tablespoon and add 1 extra tablespoon of sugar or plum syrup along with a splash of mirin to create a sweet, savory soy-braised dish known as *ganjang godeungeo jorim*.

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