Traditional Japanese Miso Soup with Grilled Mackerel

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A comforting bowl of umami-rich dashi broth infused with miso, topped with tender mackerel and fresh ingredients. This japanese-inspired soups ready in about 55 minutes pairs sheet kombu, flaked katsuobushi, dashi stock for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 30 min Cook: 25 min Serves 2 Japanese cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a large pot, combine 1 sheet kombu and 4 cups dashi stock. Bring to a simmer over medium heat, skimming foam.
  2. Step 2: Add 1 tbsp flaked katsuobushi and 2 tbsp white miso paste. Stir until fully dissolved and the broth turns deep amber.
  3. Step 3: Season the mackerel fillet with salt and pepper. Heat 1 tbsp oil in a skillet over medium-high heat. Cook the mackerel for 3-4 minutes per side until the skin is crispy and the flesh is opaque.
  4. Step 4: Divide the tofu cubes among bowls. Ladle the miso broth over the tofu, add the cooked mackerel, and garnish with kombu and chopped seaweed. Serve steaming hot.

Frequently asked questions

How long does Traditional Japanese Miso Soup with Grilled Mackerel take to make?

Total time is about 55 minutes (30 min prep + 25 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Traditional Japanese Miso Soup with Grilled Mackerel?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep sheet kombu from drying out.

Can I substitute ingredients in Traditional Japanese Miso Soup with Grilled Mackerel?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Traditional Japanese Miso Soup with Grilled Mackerel for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Traditional Japanese Miso Soup with Grilled Mackerel?

Japanese soups like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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