I'm amazed at how delicious this soy-braised mackerel is

We are revealing Chef Kim Dae-seok's 35 years of know-how.
Today, I will share the recipe for Braised Spanish Mackerel in Soy Sauce.
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Cup measurements are based on 200mL.
(This is equivalent to 1 full paper cup)
The wooden spoon used in the video is
slightly larger than a standard rice spoon used at home.
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[Ingredients]
1 Spanish mackerel (6 pieces) + 1/3 teaspoon salt + 1 teaspoon ginger juice + 2 teaspoons mirin, 3 teaspoons potato starch, 1 Cheongyang chili pepper, 10cm white part of green onion, green onion 1 unit
[Seasoning Ingredients]
1 1/2 cups water (300mL), 3 tablespoons dark soy sauce, 2 pinches seasoned salt, 200g radish, 1/3 tablespoon dark soy sauce,
5 cloves garlic, 1/2 piece ginger, 2 tablespoons rice syrup
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