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["Stir 1/4 cup soy sauce and brown sugar in a medium bowl. Cut tofu into 1/2""-thick slabs and then into squares. Pat dry with paper towels. Add tofu and toss to coat. Let sit, tossing occasionally, 20 minutes.", "Meanwhile, remove green tops from scallions and very thinly slice; set aside. Coarsely chop white parts and place in a medium pot. Add mushrooms, kombu, ginger, garlic, and 8 cups water and bring to a simmer over medium-high. Reduce heat to low and cook 10 minutes. Remove from heat; discard kombu. Let dashi sit 20 minutes (this will coax more flavor from aromatics), then fish out and discard scallions, mushrooms, ginger, and garlic.", "Heat vegetable oil in a large skillet, preferably nonstick, over medium-high. Cook tofu, working in batches if needed, until golden brown and crisp around edges, about 3 minutes per side. Transfer to paper towels to drain; season with salt.", "While tofu is cooking, bring dashi to a boil. Add bok choy and carrots and cook until tender, about 3 minutes. Add remaining 2 Tbsp. soy sauce; taste and season with more salt if needed.", "Ladle soup into bowls and add tofu, radishes, and reserved scallion tops; drizzle with sesame oil.", "Dashi can be made 3 days ahead. Let cool; cover and chill, or freeze up to 3 months."]
