Crispy Skin Fish with Lemon Caper Butter Sauce
Crispy Skin Fish with Lemon Caper Butter Sauce is a intermediate French recipe that serves 1. 430 calories per serving.
Prep: 20 min | Cook: 15 min | Total: 45 min
Cost: $10.40 total, $10.40 per serving
Ingredients
- 1 piece (~6 oz, 2 cm thick) Mutton snapper fillet (skin-on) (Fresh, skin-on, bloodline bright red)
- 1 tsp Kosher salt (Generous seasoning, especially on skin side)
- 2 tbsp Clarified butter (ghee) (For searing; high smoke point)
- 3 tbsp Unsalted butter (For finishing sauce and basting)
- 1 whole Lemon (Zest, juice, and segments used)
- 1 tbsp Capers (in brine) (Plus a splash of brine)
- 1 tbsp Fresh parsley (Finely chopped, for garnish)
- to taste Freshly ground black pepper (For sauce)
- as needed Paper towels (For drying fish)
Instructions
Dry and season the fish
Pat the fish fillet completely dry on all sides with paper towels. Ensure the skin is especially dry for maximum crispiness. Generously season both sides with kosher salt, using a bit more on the skin side.
Time: PT3M
Heat pan and add clarified butter
Heat a skillet over medium-high heat. Add clarified butter and allow it to get hot but not smoking (about 300°F/150°C).
Time: PT2M
Temperature: 150°C
Sear fish skin-side down
Place the fish fillet skin-side down in the hot pan. Immediately press gently with a spatula for the first 10-20 seconds to prevent the skin from curling. Optionally, use a weight (like another pan) for even contact.
Time: PT2M
Cook skin side until crisp
Continue cooking skin-side down, occasionally moving the fillet gently for even browning. Cook until the skin is golden and crisp, about 4-5 minutes.
Time: PT5M
Prepare lemon segments and zest
While the fish cooks, zest the lemon and set aside. Cut off both ends of the lemon, slice away the peel and white pith, then cut between the membranes to release segments. Remove any seeds. Squeeze leftover juice from the membrane into a bowl.
Time: PT5M
Flip fish and baste
Lower the heat to medium. Flip the fish gently with a spatula. Baste the top with hot butter from the pan for even cooking and flavor. Cook for another 2-3 minutes.
Time: PT3M
Add whole butter and make sauce
Remove excess clarified butter from the pan. Add unsalted butter and let it melt, cooling the pan slightly. Add capers and a splash of their brine, lemon juice, and lemon zest. Stir and baste the fish with the sauce.
Time: PT3M
Finish sauce and garnish
Add lemon segments, a bit more butter if desired, a pinch of salt, cracked black pepper, and chopped parsley. Warm through, then remove the fish from the pan.
Time: PT2M
Plate and serve
Place fish on a plate, skin side up or down as preferred. Spoon sauce and lemon segments around the fish. Garnish with extra parsley and lemon zest. Serve immediately.
Time: PT2M
Cleanup
Wash pan, spatula, knife, cutting board, bowls, and utensils. Wipe down counters and stove. Dispose of used paper towels.
Time: PT10M
Nutrition Facts
- Calories
- 430
- Protein
- 32g
- Carbohydrates
- 5g
- Fat
- 31g
- Fiber
- 1g
Dietary info: Gluten-Free, Low-Carb, low-carb, keto-friendly, high-protein
Allergens: Fish, Dairy
Ingredient Substitutions
- Instead of Mutton snapper fillet (skin-on): Red snapper, Sea bass, Salmon (skin-on), Arctic char
- Instead of Kosher salt: Sea salt
- Instead of Clarified butter (ghee): Ghee, High-heat neutral oil (grapeseed, canola)
- Instead of Unsalted butter: European-style butter
- Instead of Lemon: Meyer lemon, Lime (for a different flavor)
- Instead of Capers (in brine): Chopped green olives
- Instead of Fresh parsley: Chives, Dill
- Instead of Freshly ground black pepper: White pepper
- Instead of Paper towels: Clean kitchen towel
Equipment Needed
- Nonstick or stainless steel skillet (10-12 inch)
- Fish spatula
- Tongs (optional)
- Microplane or fine grater (optional)
- Sharp knife
- Cutting board
- Small bowl (optional)
- Instant-read thermometer (optional)
- Spoon (for basting)
Critical Steps — Do Not Skip
- Drying the fish thoroughly before cooking.
- Searing the skin side in clarified butter at the correct temperature.
- Pressing the fish down to prevent curling.
- Not overcooking the fish—use a thermometer if unsure.
- Finishing the sauce with whole butter, capers, and lemon at the end.
Chef Tips from the Video
- Always start with the highest quality, freshest fish available.
- Drying the skin thoroughly is the secret to crispiness.
- Segmenting the lemon adds a professional touch and avoids bitterness.
- Baste the fish frequently for even cooking and flavor.
- Let the fish rest for a minute after cooking for best texture.
Troubleshooting
Fish skin sticks to the pan.
Ensure the pan and butter are hot before adding fish, and do not move the fish until the skin releases naturally.
Fish is overcooked and dry.
Use an instant-read thermometer and remove fish from heat at 115°F (46°C); it will continue to cook off heat.
Butter burns during cooking.
Use clarified butter for searing; add whole butter only at the end for the sauce.
Sauce splits or looks greasy.
Add cold butter off the heat and swirl to emulsify; do not overheat after adding butter.
Storage
Refrigerator: Store leftovers in an airtight container for up to 1 day. Reheat gently to avoid drying out.
Freezer: Not recommended; fish and sauce texture will suffer.
Room temperature: Do not leave cooked fish at room temperature for more than 1 hour.
Make-Ahead Tips
- Lemon segments and zest can be prepared up to 1 day ahead and refrigerated.
- Clarified butter can be made in advance or purchased.
Last updated: August 20, 2026






