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1
Marinate the beef
15 minutes
Room temperature, about 20°C (68°F)
Toss the beef strips (200 g) with 15 ml of the soy sauce, 5 g of the sugar, 5 ml of the sesame oil, half the minced garlic (6 g) and the black pepper (1 g). Leave it while you prepare everything else — 15 minutes is enough for thin strips.
Do not add salt to the marinade; the soy sauce already carries plenty.
Done when: Beef evenly coated and glossy, no dry patches.
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2
Cook the noodles
10 minutes
Boiling water 100°C (212°F)
Boil the dangmyeon (250 g) in a large pot of unsalted water for 6 to 7 minutes until soft and chewy with no hard white core. Drain, rinse briefly under cold water to stop the cooking, then snip the tangle a few times with kitchen scissors and toss with 1 tablespoon of the sesame oil so the strands do not stick.
Rinsing is not optional — unrinsed noodles glue themselves into one lump as they cool.
Done when: Noodles soft, springy and slippery, no hard centre.
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3
Blanch the spinach and slice the vegetables
10 minutes
Boiling water 100°C (212°F)
Blanch the spinach (150 g) in the same boiling water for 30 seconds until just wilted, then plunge into cold water, squeeze dry and cut into 5 cm lengths. Season with a pinch of the salt (1 g) and a few drops of sesame oil. Meanwhile the carrot (100 g), onion (120 g), shiitake (100 g) and red pepper (80 g) should be cut into thin matchsticks, ready to cook.
Squeeze the spinach hard — wet spinach waters down the sauce and makes the noodles soggy.
Done when: Spinach bright green and dry to the touch, vegetables cut evenly.
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4
Stir-fry in batches
10 minutes
High heat 200°C (400°F)
Heat the vegetable oil (15 ml) in a large wok or pan over high heat. Fry the beef in a single layer for 2 to 3 minutes until browned and cooked through to at least 63°C (145°F), then lift it out. In the same pan, stir-fry the onion, carrot, shiitake and pepper for 3 to 4 minutes until just tender but still crisp, then return the beef and the spinach to the pan.
Cook in batches and keep the pan hot — crowding the pan steams the vegetables instead of frying them.
Done when: Beef browned at the edges, vegetables bright and crisp-tender.
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5
Toss with the sauce and serve
5 minutes
Medium heat 160°C (320°F)
Add the noodles to the pan with the remaining 45 ml of soy sauce, 15 g of sugar, 25 ml of sesame oil and the remaining 6 g of garlic. Toss everything over medium heat for 2 minutes until the noodles are evenly glossy and the sauce has coated every strand. Taste and add the remaining 1 g of salt only if needed, then pile onto a platter and scatter with the spring onions (40 g) and toasted sesame seeds (10 g).
Toss with tongs and lift from the bottom — the sauce pools underneath and the top strands stay pale if you only stir the surface.
Done when: Noodles evenly brown-glossy, vegetables mixed through, nothing pooling at the bottom.
auto_awesome Finishing Touches & Plating
Serve japchae warm or at room temperature — it is one of the rare noodle dishes that is just as good lukewarm, which is why it sits at the centre of the table at celebrations while everyone helps themselves. A final drizzle of sesame oil just before serving keeps the noodles shining.
South Korea
1h 5m
