Miso-Mirin
The marinade behind the famous black cod plate. Sweet, savory, and it lacquers into a glossy crust. Best on black cod, salmon, chicken thighs, and pork.
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Ingredients
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Method
Warm the sake and mirin in a pan to cook off the raw alcohol, then whisk in the miso and sugar until smooth. Cool completely before it touches protein.
- 10 min
In a medium saucepan, combine the mirin and sake. Bring to a boil over medium-high heat and cook for 1 minute to cook off the alcohol. Reduce heat to low and whisk in the granulated sugar until dissolved. Remove from heat and incorporate the white miso paste, soy sauce, grated ginger, and sesame oil until a smooth marinade forms.
Why it matters
Boiling off the alcohol from the mirin and sake creates a more concentrated and nuanced flavor base for your marinade.
Common mistake
Adding miso paste to boiling liquid can compromise its beneficial enzymes and flavor.
Coat the fish or meat and rest 24 to 72 hours in the fridge — the long version is worth it. Wipe the marinade off before cooking (miso scorches easily), then smoke or sear.
- 24h
Allow the miso marinade to cool completely. Once cooled, place the black cod fillets in a shallow dish or a resealable bag. Pour the marinade over the fish, ensuring all surfaces are well coated. Cover or seal and refrigerate.
Why it matters
A 24-hour marination period allows the complex flavors of the miso, mirin, and sake to deeply penetrate the fish, resulting in a more flavorful and tender product. The sugar also helps in the caramelization process later.
Common mistake
Not allowing sufficient time for marination, which results in a less flavorful fish.
- 2h
Remove the cod from the marinade and gently wipe off any excess marinade with a paper towel; do not rinse. Place the fish skin-side down on a wire rack set over a baking sheet. Allow it to air dry, uncovered, in the refrigerator for 2-4 hours, or at room temperature for 30 minutes to 1 hour.
Why it matters
A pellicle is a sticky, protein-rich surface that forms on the fish, which helps smoke adhere better and promotes a crispier skin.
Common mistake
Skipping this step, leading to less smoke flavor and a softer skin.
- 350°F20 min
Preheat your smoker or pellet grill to target temperature. While the smoker preheats, remove the black cod from the marinade. Gently scrape off most of the excess marinade from the fish, leaving a thin layer. Do not rinse the fish.
Why it matters
Scraping off excess marinade prevents it from burning and becoming bitter during the cook, while leaving a thin layer allows for a beautiful glaze to form.
Common mistake
Leaving too much marinade on, which can lead to a burnt exterior and bitter taste.
- 350°F15 min
Place the black cod fillets directly on the smoker grates, skin-side down if applicable. Smoke until the fish is opaque and flakes easily with a fork.
Why it matters
Cooking at a higher temperature allows the sugars in the marinade to caramelize rapidly, creating a glossy, flavorful crust while keeping the interior moist.
Common mistake
Overcooking the fish, which will result in a dry, tough texture.
- 225°F15 min
Preheat your pellet grill to 225°F (107°C). Ensure your hopper has enough wood pellets, preferably a mild fruit wood like apple or cherry.
Why it matters
Consistent low temperature is crucial for infusing smoke flavor without overcooking the delicate fish.
Common mistake
Smoking at too high a temperature, which can cook the fish before it absorbs sufficient smoke.
- 140°F5 min
Use an instant-read thermometer to check the thickest part of the fish. Remove the fish from the smoker once it reaches the target internal temperature.
Why it matters
Monitoring the internal temperature ensures the fish is perfectly cooked to a safe and delicious doneness without drying it out.
Common mistake
Eyeballing doneness instead of using a thermometer, leading to under or overcooked fish.
- 5 min
Carefully remove the black cod from the smoker and let it rest for a few minutes. Garnish with thinly sliced scallions before serving.
Why it matters
A short rest allows the juices to redistribute throughout the fish, ensuring a more succulent and tender final product. The scallions add a fresh, aromatic contrast.
Common mistake
Cutting into the fish immediately after cooking, causing the juices to run out and dry out the meat.
- 400°F4 min
If desired, for a charred glaze, once the fish reaches 140°F (60°C), increase the smoker temperature to 400°F (200°C) or transfer to a hot cast-iron skillet (or broiler). Cook for 2-4 minutes per side, or until the surface is beautifully caramelized and slightly blackened.
Why it matters
The high heat caramelizes the sugars in the marinade, creating a glossy, flavorful crust that is a hallmark of miso-marinated fish.
Common mistake
Burning the glaze due to sugar content; keep a close eye on it.
- 5 min
Once cooked, carefully remove the black cod from the smoker and let it rest on a serving platter for 5 minutes.
Why it matters
Resting allows the juices to redistribute throughout the fish, resulting in a more succulent and flavorful final product.
Common mistake
Serving immediately, which can cause juices to escape and lead to a drier fish.
Garnish the smoked miso-mirin black cod with thinly sliced green onions. Serve immediately with steamed rice and your favorite vegetables.
Why it matters
Green onions add a fresh, pungent counterpoint to the rich, savory-sweet fish, enhancing the overall presentation and flavor.
Common mistake
Forgetting the garnish; it adds both visual appeal and a fresh flavor component.
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