Equipment
Ingredients
Sea Bream & Salt Crust
- 1 sea bream, whole, gutted, gills removed, scales left on
- 1000 g coarse sea salt
- 3 egg whites
- 30 ml water
- 1 lemon, sliced into thin rounds
- 10 g fresh thyme, whole sprigs
Beurre Blanc
- 60 ml dry white wine
- 30 ml white wine vinegar
- 1 shallot, finely minced
- 150 g unsalted butter, very cold, cut into 1cm cubes
- 15 ml heavy cream
- kosher salt
- white pepper
Asparagus
- 300 g asparagus, woody ends trimmed
- kosher salt
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 1038 kcal
- Protein
- 85 g
- Carbohydrates
- 19 g
- Fat
- 78 g
- Fiber
- 6 g
- Sugar
- 6 g
- Sodium
- 1077 mg
- Saturated Fat
- 38 g
- Trans Fat
- 2 g
- Monounsaturated Fat
- 18 g
- Polyunsaturated Fat
- 2 g
- Cholesterol
- 161 mg
- Potassium
- 1033 mg
- Calcium
- 155 mg
- Iron
- 8.0 mg
- Magnesium
- 62 mg
- Phosphorus
- 203 mg
- Zinc
- 1.9 mg
- Vitamin A
- 658 mcg
- Vitamin C
- 54 mg
- Vitamin E
- 1.8 mg
- Vitamin K
- 5 mcg
- Vitamin B6
- 0.1 mg
- Vitamin B12
- 0.1 mcg
- Thiamin
- 0.04 mg
- Riboflavin
- 0.04 mg
- Niacin
- 0.1 mg
- Folate
- 13 mcg
- Water
- 84 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat the oven to 200 degrees Celsius (390 degrees Fahrenheit). Line a baking sheet with parchment paper.
In a large mixing bowl, combine the coarse sea salt, egg whites, and water. Mix thoroughly with your hands until the mixture holds its shape when squeezed, resembling wet sand.
Pat the sea bream dry with paper towels inside and out. Stuff the cavity with the lemon slices and fresh thyme sprigs.
Spread a 1cm thick layer of the salt mixture onto the prepared baking sheet, slightly larger than the fish. Lay the stuffed fish on top, then pack the remaining salt mixture over the fish, pressing firmly to create a complete, airtight seal with no gaps.
Bake the salt-encased fish in the preheated oven for 30 minutes. A probe thermometer inserted through the crust into the thickest part of the fish should register 55 to 60 degrees Celsius (131 to 140 degrees Fahrenheit).
While the fish bakes, combine the white wine, white wine vinegar, and minced shallot in a small saucepan over medium heat. Simmer until the liquid is heavily reduced and syrupy, leaving only about 1 to 2 tablespoons of liquid in the pan.
Reduce the heat to the lowest setting. If using heavy cream to stabilize, whisk it in now. Whisk in the cold butter cubes one or two at a time, moving continuously. Wait until the butter is almost fully melted before adding the next pieces. The sauce should become thick, opaque, and glossy. Remove from heat, season with salt and white pepper to taste, and keep warm in a thermos or over a warm water bath.
Bring a medium saucepan of heavily salted water to a boil. Add the trimmed asparagus and blanch for 3 to 4 minutes until tender-crisp. Drain immediately and set aside.
Remove the fish from the oven and let it rest for 5 minutes. Using a mallet or the back of a heavy spoon, gently crack the salt crust around the edges. Lift off the top crust in large pieces and discard. Gently brush away any loose salt from the fish.
Carefully peel back the skin of the fish, which should detach easily. Lift the top fillet away from the spine using a fish spatula and transfer to a warmed plate. Pull the spine up and out, then remove the bottom fillet.
Arrange the blanched asparagus alongside the sea bream fillets. Spoon the warm beurre blanc generously over the fish and serve immediately.
Chef's Notes
- Leaving the scales on the sea bream is the secret to a perfect salt bake. The scales act as an impenetrable armor, allowing the fish to steam in its own juices without absorbing the surrounding salt.
- Egg whites and a splash of water bind the salt crystals together. The goal is the texture of wet sand ready for a sandcastle. If it crumbles, add water one teaspoon at a time.
- Beurre blanc relies on a delicate thermal balance. If you are worried about the sauce breaking while waiting for the fish, store it in a pre-warmed insulated thermos to hold it perfectly at serving temperature without risk of splitting.
- Do not guess the doneness of a salt-baked fish. Use an instant-read thermometer by piercing straight through the hard salt crust into the thickest part behind the head to hit exactly 55C to 60C.
Storage
Troubleshooting
Beurre blanc separates and looks greasy or broken
Cause: The pan was too hot or the butter was added too quickly without enough whisking
Fix: Remove from heat immediately. Whisk vigorously with a teaspoon of ice-cold water or heavy cream to re-emulsify.
Prevention: Keep the heat as low as possible, use very cold butter, and whisk continuously. Adding a splash of heavy cream before the butter helps stabilize it.
Fish flesh is overly salty
Cause: Scales were removed or the cavity was not sealed tightly enough, allowing salt to penetrate the meat
Fix: Cannot be fixed. Brush off as much surface salt as possible and serve with extra unsalted asparagus.
Prevention: Always ask the fishmonger to leave the scales on when prepping for a salt crust, and ensure the salt shell has no cracks before baking.
Cultural Context
Baking in a salt crust is an ancient culinary technique that traces back to the Mediterranean, designed originally to preserve moisture and protect delicate foods from the intense, direct heat of open fires. When paired with beurre blanc, a classic reduction sauce that originated in the Loire Valley in the early 20th century, the dish marries rustic coastal methodology with refined French gastronomy.
