Mary Berry Sea Bass with Lemon Butter Sauce Recipe

This crispy, tender Mary Berry Sea bass with lemon butter sauce Recipe is made with fresh sea bass fillets, zesty lemon, and cold butter, and is ready in just 15 minutes. The rich butter swirls into the sharp lemon juice, creating a velvety sauce that clings to the flaky fish without overpowering it. I love how quickly this comes together for an elegant weeknight dinner that feels like a restaurant meal.

The Secret To Getting It Right

I learned quickly that the key to this dish is managing the skin. If you put wet fish into a pan, the skin will steam rather than crisp, and it often sticks or tears. I always pat the fillets thoroughly dry with kitchen paper and score the skin lightly with a sharp knife before seasoning; this stops the fish from curling up the moment it hits the heat.

Another lesson came from the sauce itself. Mary Berry often emphasises adding cold butter to the warm lemon juice off the heat. If the pan is too hot, the butter splits and becomes oily instead of emulsifying into a glossy, thickened sauce. Patience during those final few seconds makes all the difference to the texture.

Mary Berry Sea bass with lemon butter sauce Recipe Ingredients

• 4 Sea bass fillets (skin-on, roughly 140g each)
• 1 tbsp Sunflower or vegetable oil
• 25g Butter (for frying)
• Salt and black pepper

For the Lemon Butter Sauce:

• 50g Cold unsalted butter (cubed)
• Juice of ½ Lemon
• 2 tbsp Fresh parsley, finely chopped
• 1 tbsp Capers (optional, for a salty kick)

How To Make Mary Berry Sea bass with lemon butter sauce Recipe

1. Prep the Fish: Pat the sea bass fillets completely dry with kitchen paper. Using a sharp knife, make 3 shallow scores across the skin of each fillet (do not cut into the flesh). Season both sides generously with salt and black pepper.
2. Sear the Skin: Heat the oil and 25g of butter in a large non-stick frying pan over medium-high heat. Once the butter foams, place the fillets in the pan, skin-side down. Immediately press down gently on each fillet with a fish slice for 10-15 seconds to prevent curling.
3. Fry Until Crispy: Cook for 3-4 minutes without moving the fish, until the skin is golden brown and crisp, and the flesh has turned opaque two-thirds of the way up.
4. Finish Cooking: Flip the fillets carefully. Cook for another 1-2 minutes on the flesh side until just cooked through. Remove the fish to a warm plate and set aside.
5. Make the Sauce: Wipe the pan clean if there are burnt bits, or simply add the lemon juice to the residual pan juices. Let it bubble for 30 seconds. Remove the pan from the heat and whisk in the 50g of cold cubed butter until it melts into a glossy, thickened sauce. Stir in the parsley (and capers if using). Spoon over the fish immediately.

Recipe Tips

• Score delicately: When scoring the skin, use a light hand. You only want to cut through the skin layer to prevent curling; cutting deep into the flesh can dry it out.
• Cold butter is key: For the sauce, ensure your butter is cubed and cold from the fridge. This helps it emulsify with the warm lemon juice slowly, creating a creamy texture rather than a greasy one.
• Don’t overcrowd the pan: If your pan is too small, cook the fish in two batches. Overcrowding drops the temperature and causes the fish to boil in its own juices.

What To Serve With Sea Bass

This delicate fish pairs beautifully with crushed new potatoes tossed in a little extra butter and herbs. For greens, steamed asparagus or tenderstem broccoli work perfectly to soak up the zesty lemon sauce without competing with the flavour of the sea bass.

How To Store

Fish is best enjoyed immediately after cooking while the skin is crisp. If you have leftovers, store them in an airtight container in the fridge for up to 24 hours. Reheat gently in a pan over low heat, though be aware the skin will lose its crunch.

FAQs

• Can I use frozen sea bass fillets?
  Yes, but they must be completely defrosted and patted very dry before cooking. Frozen fish holds more water, so be extra diligent with the kitchen paper to ensure the skin crisps up.
• Why did my sauce split?
  The pan was likely too hot when you added the butter. Always remove the pan from the heat or turn it to the lowest setting before whisking in the cold butter to maintain the emulsion.
• Can I use a different fish?
  Absolutely, this method works well with sea bream, trout, or salmon fillets. Adjust the cooking time slightly depending on the thickness of the fillet.

Nutrition

• Calories: 320 kcal
• Total Fat: 24g
• Saturated Fat: 12g
• Cholesterol: 110mg
• Sodium: 280mg
• Total Carbohydrate: 2g
• Protein: 26g