Authentic Japanese Miso-marinated Black Cod

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

Tender black cod fillets marinated in sweet miso, sake, and mirin, then grilled to perfection with a caramelized crust. This japanese-inspired seafood (low-carb, gluten-free) ready in about 35 minutes pairs black cod fillets, red miso paste, sake for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 380 calories and feeds 4, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. 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: 20 min Cook: 15 min Serves 4 Japanese cuisine 380 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a shallow dish, whisk together 1/3 cup red miso paste, 1/4 cup sake, 2 tbsp mirin, 2 tbsp soy sauce, 1 tbsp honey, and 2 minced garlic cloves. Add 1/2 cup daikon julienned and stir to combine.
  2. Step 2: Submerge 4 black cod fillets in the marinade. Cover and refrigerate for 1 hour, turning once halfway through.
  3. Step 3: Preheat grill to 400°F (200°C). Remove cod from marinade, letting excess drip off. Place on a parchment-lined baking sheet. Brush with 1 tbsp sesame seeds mixed with 1 tbsp of the marinade.
  4. Step 4: Grill for 12-14 minutes, flipping halfway, until flesh is opaque and crusty. Let rest 5 minutes before serving with remaining marinade as a dipping sauce.

Frequently asked questions

How long does Authentic Japanese Miso-marinated Black Cod take to make?

Total time is about 35 minutes (20 min prep + 15 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 Authentic Japanese Miso-marinated Black Cod?

Refrigerate in a covered airtight container for up to 3–4 days (FDA FoodKeeper guideline for cooked fish). Store any fresh salsa or citrus-based garnish in a separate container — it keeps for up to 2 days. Freeze cooked fish (without fresh garnishes) for up to 3 months; thaw overnight in the fridge and reheat gently at 275°F until just warmed through to preserve texture.

Can I substitute ingredients in Authentic Japanese Miso-marinated Black Cod?

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 Authentic Japanese Miso-marinated Black Cod for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). 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.

Is Authentic Japanese Miso-marinated Black Cod low-carb?

Yes — this recipe is tagged low-carb, gluten-free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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