Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 whole sea bass (about 1.8 lb / 800 g), scaled and gutted
- 2 lemons (1 sliced, 1 cut into wedges)
- 1 small fennel bulb (optional), fronds reserved
- 6 sprigs fresh thyme
- 1 small bunch flat-leaf parsley
- 4 garlic cloves, lightly crushed
- 1/4 cup (60 ml) dry white wine (optional)
- 5 lb (2.3 kg) kosher salt
- 6 large egg whites
- 1/2 cup (120 ml) water
- 2 tbsp extra-virgin olive oil
Do This
- 1) Heat oven to 425°F (220°C). Line a baking sheet with parchment.
- 2) Pat fish very dry; stuff cavity with lemon slices, herbs, and garlic.
- 3) Mix 5 lb kosher salt + 6 egg whites + 1/2 cup water to make packable “wet sand.”
- 4) Make a salt base, set fish on it, then fully seal with a thick salt crust (at least 1/2 inch thick).
- 5) Bake 28–35 minutes, until an instant-read thermometer in the thickest part reads 135°F (57°C).
- 6) Rest 10 minutes. Crack crust at the table, lift off the skin, and serve with olive oil and lemon.
Why You’ll Love This Recipe
- Juicy, tender fish every time: The salt crust traps steam, gently roasting the fish without drying it out.
- Big “wow” moment: Cracking the crust at the table is dramatic, fun, and surprisingly simple.
- Minimal mess, maximum flavor: Herbs and citrus perfume the fish while the salt stays mostly on the outside.
- Perfect for guests: It’s an impressive centerpiece that’s very forgiving for home cooks.
Grocery List
- Seafood: 1 whole sea bass (about 1.8 lb / 800 g), scaled and gutted
- Produce: 2 lemons, 1 small fennel bulb (optional), fresh thyme, flat-leaf parsley, 4 garlic cloves
- Dairy: 6 large eggs (you’ll use the whites)
- Pantry: 5 lb kosher salt, extra-virgin olive oil, dry white wine (optional)
Full Ingredients
For the Fish
- 1 whole sea bass (about 1.6–2.0 lb / 725–900 g), scaled and gutted (ask the fishmonger)
- 1 lemon, thinly sliced into rounds (remove seeds)
- 1 lemon, cut into wedges (for serving)
- 1 small fennel bulb, very thinly sliced (optional, for stuffing)
- Fennel fronds from the bulb (or extra parsley if skipping fennel)
- 6 sprigs fresh thyme
- 1 small bunch flat-leaf parsley (about 1 oz / 30 g)
- 4 garlic cloves, lightly crushed (skins on is fine)
- 1/4 cup (60 ml) dry white wine (optional, for the cavity)
For the Salt Crust
- 5 lb (2.3 kg) kosher salt (Diamond Crystal recommended; if using a denser brand like Morton, it will still work)
- 6 large egg whites (about 200 g)
- 1/2 cup (120 ml) water
To Finish and Serve
- 2 tbsp extra-virgin olive oil (plus more to taste)
- Flaky sea salt, optional (taste first; you may not need it)
- Extra chopped parsley or fennel fronds, optional
Step-by-Step Instructions
Step 1: Preheat and set up your pan
Heat the oven to 425°F (220°C) with a rack in the middle position. Line a rimmed baking sheet with parchment paper (this makes cleanup much easier and helps the crust lift off later).
Have ready: a large mixing bowl, a spatula or your hands for mixing the crust, and an instant-read thermometer.
Step 2: Prep and dry the sea bass
Rinse the fish quickly under cold water only if needed for stray scales, then pat it very dry inside and out with paper towels. Dry skin helps the crust set and keeps the salt mixture from getting gummy.
Trim fins with kitchen shears if they’re sharp and unwieldy (optional). Do not salt the fish; the crust does the job of sealing in moisture, not seasoning directly.
Step 3: Stuff the cavity with aromatics
Fill the fish cavity with the lemon slices, thyme, parsley, crushed garlic, and thin fennel slices (if using). If you’d like, drizzle 1/4 cup (60 ml) dry white wine into the cavity before you close it up with the aromatics.
Keep the stuffing inside the cavity (not piled on the outside), so the salt crust seals tightly all around.
Step 4: Make the salt crust mixture
In a large bowl, combine 5 lb (2.3 kg) kosher salt and 6 egg whites. Add 1/2 cup (120 ml) water. Mix with your hands or a sturdy spatula until the mixture looks and feels like wet sand: it should clump when squeezed.
If it feels too dry to pack, add water 1 tablespoon at a time. If it feels soupy, mix in a little more salt.
Step 5: Build a thick, sealed salt “igloo”
Spoon a bed of salt mixture onto the parchment-lined baking sheet, about 1/2 inch (1.25 cm) thick and slightly larger than the fish. Lay the fish on top.
Pack the remaining salt mixture over and around the fish until it is completely encased, with no gaps. Aim for a crust that is at least 1/2 inch (1.25 cm) thick everywhere, and up to 3/4 inch (2 cm) over the thickest parts.
Press firmly to compact the crust; a tight seal is what creates the gentle steaming effect inside.
Step 6: Roast until just cooked through
Bake at 425°F (220°C) for 28–35 minutes, depending on the size and thickness of your fish.
To check doneness, insert an instant-read thermometer through the crust into the thickest part of the fish (near the center of the body, away from the bone). Pull the fish when it reaches 135°F (57°C). During the rest, it will gently rise closer to about 140°F (60°C) for tender, flaky results.
Step 7: Rest, crack the crust, and serve
Let the fish rest for 10 minutes. This sets the crust and lets the juices settle.
For dramatic service, bring the whole tray to the table. Use the back of a spoon or a small mallet to crack a border around the top of the crust, then lift off the “lid” in pieces. Brush away any loose salt chunks.
Carefully peel back the skin (it should release easily), then lift the top fillet off the bones. Remove the backbone (it should lift out in one piece), then serve the bottom fillet. Drizzle with 2 tbsp olive oil, sprinkle with optional chopped parsley or fennel fronds, and finish with fresh lemon wedges.
Pro Tips
- Dry fish + packable salt = success: Pat the fish very dry, and mix the salt to a “wet sand” texture so it compacts and seals.
- Build it thicker than you think: A thin crust can crack and leak steam. Keep it at least 1/2 inch thick all over.
- Use a thermometer for confidence: Pull at 135°F (57°C) in the thickest part for moist, tender fish.
- Don’t worry about “over-salting”: When the crust is intact, the fish steams inside; most of the salt stays in the shell. Just avoid leaving exposed flesh where salt can touch directly.
- Clean fillets, no stress: After removing the top fillet, lift out the backbone and rib bones in one piece, then the bottom fillet is essentially boneless.
Variations
- Mediterranean: Stuff with lemon, orange peel strips, parsley, and a pinch of crushed fennel seed (inside the cavity only).
- Herb-forward: Add fresh dill and tarragon alongside the parsley and thyme for a brighter, springy flavor.
- Alternate fish: Use the same method for whole branzino, snapper, or trout. Keep the target internal temperature at 135°F (57°C) and adjust bake time for size.
Storage & Make-Ahead
Make-ahead: You can wash and dry the herbs, slice the lemon, and mix the salt crust mixture up to 2 hours ahead. Keep the salt mixture covered at room temperature; if it dries out, mix in 1–2 tbsp water right before packing. Stuff the fish no more than 1 hour before baking and keep it refrigerated.
Storage: Refrigerate leftover cooked fish in an airtight container for up to 2 days. Remove flesh from the bones before storing for easier reheating.
Reheating: Gently rewarm in a 300°F (150°C) oven for 8–12 minutes, just until warmed through, or enjoy cold flaked over salad with olive oil and lemon.
Nutrition (per serving)
Approximate (based on 4 servings): 260 calories, 35 g protein, 11 g fat, 2 g carbohydrates, 0 g fiber, 0 g sugar, 450 mg sodium. Note: Sodium varies widely; the crust is not fully absorbed, but some salt can reach the surface depending on crust thickness and sealing.
