Sablefish with Green Herb Sauce and White Yogurt-Dill Sauce
Cooking Sablefish: Master Class with Green and White Sauces
This preparation pairs sablefish with two contrasting sauces served simultaneously: a bright, acidic herb sauce (the "green sauce" — a salsa verde variant with basil, parsley, and cilantro) and a cool, tangy yogurt-dill sauce (the "white sauce"). The two sauces create a hot/cold, rich/acidic contrast on the plate that works particularly well with sablefish's high fat content — the acid in the green sauce cuts through the fish's richness, while the yogurt sauce provides a cooling element. The technique is the standard sear-roast method that suits sablefish best: skin seared crispy in a hot skillet, finished in the oven to preserve the interior's silky texture.
For premium fillets: Sablefish Fillets • Sablefish Steaks • Smoked Black Cod • Dry-Aged Sablefish.
Ingredients
Sablefish: 4 Alaskan sablefish fillets, 6 oz each, skin on. 2 tbsp neutral high-smoke-point oil (avocado or grapeseed). Fleur de sel and freshly ground black pepper.
Green sauce (salsa verde style): 1 cup fresh basil leaves. 1 cup flat-leaf parsley leaves. ½ cup fresh cilantro leaves. ¼ cup extra-virgin olive oil. 2 tbsp lemon juice. 1 garlic clove, minced. Fleur de sel and black pepper. Note: this sauce uses cilantro, which has a pronounced flavor that some find polarizing. If you prefer a milder green sauce, substitute the cilantro with additional parsley or fresh tarragon.
White sauce (yogurt-dill): 1 cup plain full-fat Greek yogurt. 2 tbsp lemon juice. 1 tbsp honey. 1 tbsp finely chopped fresh dill. Fleur de sel and white pepper. Note: full-fat Greek yogurt is essential — low-fat yogurt is thinner and more acidic, which produces an unbalanced sauce. The honey rounds out the yogurt's sharpness and complements the dill.
Make the sauces first (both can be made up to 1 day ahead)
Green sauce: Combine basil, parsley, cilantro, garlic, and lemon juice in a food processor. Pulse until roughly chopped. With the motor running, stream in olive oil until the sauce is smooth but still has texture — do not over-process into a paste. Season with fleur de sel and pepper. Taste: it should be bright and acidic with a strong herb presence. The sauce will darken within a few hours due to oxidation; if making ahead, press plastic wrap directly against the surface to minimize air contact. Keeps refrigerated up to 2 days.
White sauce: Combine yogurt, lemon juice, honey, and dill in a small bowl. Whisk until smooth. Season with fleur de sel and white pepper. Chill until serving. The sauce thickens slightly as it chills; if too thick at serving, thin with a small amount of cold water or additional lemon juice. Keeps refrigerated up to 3 days.
Cooking the sablefish: sear-roast method
Step 1 — Prep: Pat fillets completely dry with paper towels. Season skin side with fleur de sel only; flesh side with salt and pepper. Rest at room temperature 10 minutes. Preheat oven to 400°F (200°C).
Step 2 — Sear skin-side down: Heat neutral oil (not olive oil — smoke point is borderline for this temperature) in an oven-safe skillet over medium-high until shimmering. Add fillets skin-side down; press gently for 15–20 seconds to prevent curling. Cook undisturbed 3–4 minutes until skin is golden and releases cleanly. Flip; cook flesh-side 2 minutes.
Step 3 — Oven finish: Transfer skillet to oven. Roast 8–10 minutes. Target 130–140°F internal for a silky, restaurant-style center; 145°F (63°C) for FDA-standard fully cooked. Sablefish's high fat content keeps it moist at either temperature. Check at 8 minutes.
Plating
Place fillet skin-side up on the plate (preserves the crispy skin). Drizzle green sauce over and around the fish. Add a generous dollop of white sauce alongside for dipping — the two sauces should not be mixed on the plate; they are meant as contrasting elements. Garnish with fresh parsley or dill and a lemon wedge. Serve with steamed asparagus, wild rice, or roasted root vegetables.
Nutritional context
Alaskan sablefish is one of the richest dietary sources of EPA/DHA omega-3 fatty acids of any wild fish, with a fat content of 18–25% by weight (seasonally variable). It is also high in Vitamin D, B12, and selenium. The full-fat Greek yogurt in the white sauce adds protein and calcium. This is a nutritionally dense dish — the combined fat from the sablefish, olive oil in the green sauce, and yogurt sauce makes it satisfying in small portions.
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