Korean Soy Steamed Potatoes
Quick answer
Gamja-jjim is a Korean braised potato banchan made by simmering potato pieces in a sauce of soy sauce, sugar, and minced garlic until the liquid reduces to a thick, glossy glaze.
What makes this special
- Gamja-jjim reduces soy and garlic sauce into a thick, glossy glaze over tender potatoes.
- Reducing until nearly dry coats potato surface with a glossy, sticky glaze
- Sugar browning over low heat adds faint toasty sweetness over soy umami
Key ingredients
Core cooking flow
- 1 Peel 450 g potatoes cleanly and cut them into even 3 to 4 cm cubes.
- 2 Put the potatoes and 220 ml water in a pot and set it over medium heat.
- 3 Add 2 tbsp soy sauce, 1 tbsp sugar, and 0.5 tsp minced garlic, then gently s...
Gamja-jjim is a Korean braised potato banchan made by simmering potato pieces in a sauce of soy sauce, sugar, and minced garlic until the liquid reduces to a thick, glossy glaze. As the sauce concentrates, it coats every cut surface of the potato with a lacquered sheen while the seasoning penetrates through to the center, so the flavor is consistent from the outside in. The sugar caramelizes slightly during the final minutes of reduction, adding a faint toffee-like sweetness to the soy's deeper, saltier notes. Minced garlic breaks down in the heat and melds into the sauce, providing an umami backbone that rounds out the simpler flavors. Finishing with sesame oil and a generous scatter of sliced chives introduces a toasted, nutty aroma and a fresh herbal brightness. The potato itself holds its shape but is cooked through to a fluffy, yielding interior beneath the sticky exterior. Simple to make and requiring few ingredients, it is the kind of side dish that disappears from the table without much fanfare, pairing effortlessly with a bowl of rice.
Instructions
Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.
- 1Season
Peel 450 g potatoes cleanly and cut them into even 3 to 4 cm cubes.
Keeping the pieces similar in size helps them cook at the same pace and absorb the soy seasoning evenly.
- 2Control
Put the potatoes and 220 ml water in a pot and set it over medium heat.
Once it begins to boil, cook for about 8 minutes, until a chopstick enters roughly two thirds of a piece.
- 3Control
Add 2 tbsp soy sauce, 1 tbsp sugar, and 0.5 tsp minced garlic, then gently shake the pot to spread the seasoning.
Cover and simmer over medium heat for 5 minutes so the sauce starts entering the potatoes.
- 4Season
Open the lid and check that the potatoes are almost tender.
If the potatoes are very starchy, avoid hard stirring; spoon the sauce over them instead so the pieces stay intact.
- 5Control
If liquid remains, keep the pot over medium heat and reduce for 3 to 5 more minutes.
Lower the heat when only a thin layer of sauce remains on the bottom and the potato surfaces look glossy.
- 6Finish
Turn off the heat and drizzle in 1 tsp sesame oil, tossing gently with the remaining heat.
Scatter 1 tbsp chopped chives over the potatoes and serve while the reduced sauce still clings to each piece.
After the steps
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Continue with shared ingredients, meal pairings, or a similar method.
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