Seared Salmon in Dill Avodaise (Avocado Hollandaise) Sauce Recipe
Achieve restaurant-quality seared salmon with a velvety, broken-resistant avocado hollandaise (avodaise) infused with fresh dill. This science-backed method ensures a crispy skin and perfectly emulsified, nutrient-dense sauce.
- Avocado acts as a natural, fiber-rich emulsifier that stabilizes the hollandaise matrix, preventing the sauce from splitting.
- Searing the salmon skin-side down first on high thermal mass cast iron renders the subcutaneous fat for maximum crispness.
- Fresh lemon juice and dill provide essential acid and volatile oils to cut through the rich lipids of both the fish and avocado.
The secret to restaurant-grade seared salmon lies in managing thermal mass and surface moisture.
When fish hits a hot pan, proteins undergo denaturation, unfolding and cross-linking to firm the flesh. If the skin is wet, heat energy is wasted vaporizing water rather than triggering the Maillard reaction. Thoroughly drying the skin and using high-thermal-mass cast iron ensures a deeply savory, crispy crust.
Traditional hollandaise relies on egg yolks and butter to form a delicate emulsion. This recipe replaces butter with ripe avocado, creating an "avodaise." Avocado's natural fibers stabilize the emulsion, preventing the sauce from splitting.
Fresh dill and lemon juice provide essential acidity to balance the rich lipids of the fish and avocado.
Precision timing is critical.
If you enjoy rich seafood pairings, try our Blackened Salmon with Avocado Salsa or serve this with a side of Crispy Baked Asparagus Fries.
Seared Salmon in Dill Avodaise (Avocado Hollandaise) Sauce
Ingredients
- 4 skin-on salmon fillets (approx. 6 oz each)
- 1 tbsp avocado oil
- 1 tsp Diamond Crystal kosher salt
- 1/2 tsp freshly cracked black pepper
- 1 large ripe Hass avocado, pitted and scooped
- 2 large egg yolks
- 2 tbsp fresh lemon juice
- 1/4 cup warm water
- 2 tbsp unsalted butter, melted
- 3 tbsp fresh dill, finely chopped
Directions
- Pat the salmon fillets completely dry on both sides using paper towels. Season the flesh and skin sides evenly with Diamond Crystal kosher salt and black pepper.
- Heat a heavy cast-iron skillet over medium-high heat for 3 minutes until hot. Add the avocado oil, swirling to coat the bottom of the pan.
- Place the salmon fillets skin-side down in the hot skillet. Press down gently with a spatula for 10 seconds to prevent the skin from curling and ensure even contact.
- Sear undisturbed for 5 to 6 minutes until the skin is exceptionally crispy and releases easily from the pan. Flip and cook for an additional 2 to 3 minutes for medium-rare. Remove to a warm plate.
- While the salmon cooks, prepare the avodaise. Combine the avocado, egg yolks, lemon juice, and warm water in a high-speed blender. Blend on high until completely smooth.
- With the blender running on low, slowly drizzle in the melted butter to establish a stable emulsion. Stir in the finely chopped fresh dill by hand.
- Spoon a generous pool of the warm dill avodaise onto plates, top with the seared salmon fillets skin-side up to preserve crispness, and serve immediately. </
Notes
Achieving a stable emulsion and a crispy sear requires strict adherence to temperature and moisture control.
- Use Diamond Crystal Kosher Salt for seasoning; if substituting Morton's kosher salt, reduce the volume by half (use 1/2 teaspoon) to prevent over-salting due to differences in crystal density.
- The egg yolks in the avodaise must not exceed 140°F (60°C) during blending, as higher temperatures will cause the proteins to coagulate, breaking the emulsion and turning the sauce lumpy.
- If you skip drying the salmon skin, steam will trap beneath the fish, preventing the Maillard reaction. Prevent this by pressing the skin firmly against the pan with a flexible spatula during the first 10 seconds of cooking.
- The avodaise sauce will oxidize and turn brown within 12 hours due to polyphenol oxidase enzymes in the avocado; store any leftover sauce with plastic wrap pressed directly against the surface to minimize air exposure.
- If you do not have a cast-iron skillet, a heavy-bottomed stainless steel pan works as a backup, but you must heat it until the oil shimmers to prevent the fish skin from sticking.
Serving Suggestions
Serve this rich, crispy salmon alongside bright, textured sides that cut through the density of the avocado-based sauce.
- A crisp green salad tossed in a light Creamy Avocado Dressing to echo the sauce's base while adding refreshing crunch.
- Roasted asparagus spears or an Asparagus and Dill Frittata slice to double down on the herbal dill notes.
- A side of wild rice pilaf to absorb the velvety avodaise sauce.
- Steamed lemon-herb baby potatoes to provide a clean, starchy contrast to the rich fish.
Storage and Reheating
Store leftover seared salmon in an airtight glass container in the coldest zone of your refrigerator for up to two days. Keep the avodaise sauce in a separate airtight container with plastic wrap pressed directly onto the surface to prevent oxidation.
Do not freeze the avodaise sauce, as freezing will completely destroy the emulsion, causing the avocado and fat solids to separate into a watery, curdled mess upon thawing. The cooked salmon can be frozen for up to one month, though the skin will lose all crispness.
To reheat the salmon, place it in an oven preheated to 275°F (135°C) for 10 to 12 minutes, tented loosely with foil to retain moisture. To crisp the skin again, flash-sear it skin-side down in a hot, dry skillet for 60 seconds.
Gently warm the avodaise sauce by placing its container in a bowl of warm water and stirring frequently. Do not microwave or boil the sauce, or the heat will break the delicate egg yolk emulsion.
Ingredient Substitutes
You can adapt this recipe to suit dietary needs or ingredient availability by making precise technical adjustments.
- Salmon to Halibut: Swap the salmon for halibut fillets at a 1:1 ratio, but reduce the searing time by 1 minute per side as halibut has a lower fat content and dries out faster.
- Butter to Olive Oil: Replace the 2 tablespoons of melted butter in the sauce with 2 tablespoons of extra virgin olive oil at a 1:1 ratio, whisking vigorously to prevent the stronger oil from overpowering the dill.
- Lemon Juice to White Wine Vinegar: Substitute white wine vinegar for lemon juice at a 1:1 ratio, ensuring you blend the sauce slightly longer to fully integrate the sharper acetic acid.
Mastering the balance of high-heat searing and delicate emulsification is the hallmark of an accomplished home cook. With these scientific principles in hand, you can confidently execute this dish with perfect reproducibility every time. Enjoy the contrast of the shatteringly crisp skin against the velvety, dill-scented avodaise.