Seared Salmon in Dill Avodaise (Avocado Hollandaise) Sauce Recipe
Achieve a restaurant-quality sear on salmon paired with a rich, emulsified dill avocado hollandaise (avodaise) that resists breaking.
- High-heat searing triggers the Maillard reaction, creating a deeply caramelized crust while keeping the interior moist.
- Avocado acts as a natural emulsifier, replacing traditional egg yolks to create a stable, velvety sauce that does not split.
- Fresh dill and lemon juice provide essential acidity to cut through the rich lipids of both the salmon and avocado.
The secret to perfectly seared salmon lies in managing surface moisture and pan temperature. When wet fish hits a cold pan, it steams rather than sears, ruining any chance of a crisp crust. Ensuring the skin is bone-dry and using a high-smoke-point fat are non-negotiable steps for success.
At approximately 300°F (149°C), the amino acids and reducing sugars on the salmon's surface undergo the Maillard reaction, producing complex flavor compounds and a golden-brown exterior. Meanwhile, the interior proteins denature and coagulate. If cooked past 125°F (52°C) internal temperature, the muscle fibers contract too tightly, squeezing out moisture and leaving the fish dry and chalky.
Precision timing prevents this rapid moisture loss.
Unlike a traditional egg-yolk emulsion, this avocado-based sauce relies on the fruit's natural monounsaturated fats and fibers. This creates a highly stable matrix that is far less sensitive to heat than classic hollandaise.
For those familiar with our Eggs Benedict with Bacon, Avodaise (Avocado Hollandaise) and Harissa, you know how luxurious this green sauce can be. Here, we infuse it with fresh dill to complement the rich, fatty profile of the salmon. It offers a lighter, nutrient-dense alternative to heavy butter sauces.
If you enjoy vibrant citrus profiles, consider comparing this with our Chipotle Lime Salmon. However, the dill avodaise provides a uniquely herbaceous, velvety finish.
Seared Salmon in Dill Avodaise (Avocado Hollandaise) Sauce
Ingredients
- 4 salmon fillets (6 oz each, skin-on)
- 1 tbsp avocado oil
- 1 tsp Diamond Crystal kosher salt (divided)
- 1/2 tsp freshly cracked black pepper
- 1 large ripe Hass avocado (pitted and scooped)
- 3 tbsp fresh lemon juice
- 1/4 cup hot water
- 2 tbsp extra-virgin olive oil
- 1/4 cup fresh dill leaves (packed)
- 1 garlic clove (peeled)
Directions
- Pat the salmon fillets completely dry with paper towels on all sides. Season both sides evenly with 1/2 teaspoon of kosher salt and the black pepper.
- Combine the avocado, lemon juice, remaining 1/2 teaspoon of kosher salt, extra-virgin olive oil, fresh dill, and garlic in a high-speed blender or food processor. Blend on high until completely smooth, slowly drizzling in the hot water to reach a pourable, hollandaise-like consistency.
- Heat a heavy cast-iron skillet over medium-high heat for 3 minutes to maximize thermal mass. Add the avocado oil, swirling to coat the bottom of the pan until it just begins to shimmer.
- Place the salmon fillets in the skillet, skin-side down. Press down gently on each fillet with a flexible spatula for 10 seconds to prevent the skin from curling and ensure even contact with the hot pan.
- Sear undisturbed for 4 to 5 minutes until the skin is exceptionally crispy and releases easily from the pan. Flip the fillets and cook for an additional 2 to 3 minutes, or until the internal temperature reaches 125°F (52°C) for medium-rare.
- Remove the salmon from the skillet and let it rest for 2 minutes. Plate the fillets skin-side up to preserve the crispness, and spoon the warm dill avodaise sauce generously over or alongside the fish.
Notes
Achieving the perfect emulsion and sear requires strict adherence to temperature control and ingredient selection.
- Use Diamond Crystal kosher salt; if substituting Morton's kosher salt, reduce the volume by half (use 1/2 teaspoon total) to prevent over-salting due to differences in crystal density.
- The lemon juice provides citric acid, which lowers the pH of the avocado mixture, preventing enzymatic browning (oxidation) and keeping the sauce vibrant green for hours.
- If you skip drying the salmon skin thoroughly, residual moisture will instantly turn to steam upon hitting the hot oil. This lowers the pan's temperature, prevents the Maillard reaction, and results in soggy, rubbery skin.
- The avodaise sauce will thicken significantly and lose some of its bright herbaceous notes after 24 hours in the refrigerator due to cold-induced starch and fat solidification.
- If a cast-iron skillet is unavailable, a heavy-bottomed stainless steel pan works as a backup, but you must heat it thoroughly to prevent the fish skin from sticking to the metal.
Serving Suggestions
Serve this rich dish alongside bright, structured sides that balance the healthy fats of the salmon and avocado. Aim for sharp, acidic, or highly textured accompaniments to create a satisfying contrast.
- Pair with Crispy Baked Asparagus Fries to add a crunchy, earthy contrast to the velvety sauce.
- Serve over a bed of warm quinoa or Mashed Cauliflower to absorb the extra dill avodaise.
- A side of roasted cherry tomatoes provides a sweet, acidic pop that cuts through the rich lipids of the fish.
- Accompany with a crisp green salad dressed in a light vinaigrette to cleanse the palate between bites.
Storage and Reheating
Store leftovers in airtight containers.
Keep the salmon and sauce in separate containers in the coldest zone of your refrigerator for up to two days. Press plastic wrap directly onto the surface of the avodaise to prevent oxidation.
Do not freeze the avodaise sauce, as freezing breaks the delicate physical emulsion, causing the avocado fats to separate into a watery, curdled mess upon thawing. The cooked salmon can be frozen for up to a month, though its texture will become noticeably drier.
To reheat the salmon without drying it out, place it in an oven preheated to 275°F (135°C). Add a splash of water to the baking dish, cover tightly with aluminum foil to trap the steam, and heat for 8 to 10 minutes. Warm the avodaise separately by placing its container in a bowl of hot tap water, stirring occasionally until it reaches room temperature.
Ingredient Substitutes
You can adapt this recipe to suit dietary needs or pantry availability with minor technical adjustments.
- Salmon to Halibut: Swap the salmon for thick halibut fillets at a 1:1 ratio, but increase the cooking time by 1 minute per side as halibut is leaner and cooks slightly slower.
- Avocado Oil to Grapeseed Oil: Substitute avocado oil with grapeseed oil at a 1:1 ratio; both possess high smoke points above 400°F (204°C) necessary for a clean sear without smoking.
- Fresh Dill to Fresh Tarragon: Replace the dill with fresh tarragon at a 1:2 ratio (use half the amount), adjusting the blending time to ensure the tougher tarragon leaves are fully pulverized.
Master the heat of your skillet, and this elegant dish will become a staple in your culinary rotation. The combination of crispy skin and velvety, herbaceous sauce delivers a perfect balance of textures. Trust the science of the sear, and enjoy the process.