Equipment
Ingredients
Mackerel
- 300 g mackerel fillets, skin-on, pin bones removed
- 3 g black pepper, coarsely cracked
- 3 g sea salt, fine
- 15 ml olive oil
Warm Salsa
- 15 ml olive oil
- 100 g red bell pepper, diced
- 100 g green bell pepper, diced
- 80 g red onion, diced
- 150 g cherry tomatoes, halved
- 2 garlic, minced
- 10 g fresh parsley, chopped
- 15 ml lemon juice, freshly squeezed
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 507 kcal
- Protein
- 31 g
- Carbohydrates
- 15 g
- Fat
- 36 g
- Fiber
- 5 g
- Sugar
- 8 g
- Sodium
- 730 mg
- Saturated Fat
- 7 g
- Monounsaturated Fat
- 19 g
- Polyunsaturated Fat
- 7 g
- Cholesterol
- 105 mg
- Potassium
- 976 mg
- Calcium
- 67 mg
- Iron
- 3.8 mg
- Magnesium
- 144 mg
- Phosphorus
- 392 mg
- Zinc
- 1.5 mg
- Vitamin A
- 184 mcg
- Vitamin C
- 129 mg
- Vitamin D
- 24.1 mcg
- Vitamin E
- 5.5 mg
- Vitamin K
- 107 mcg
- Vitamin B6
- 1.0 mg
- Vitamin B12
- 13.1 mcg
- Thiamin
- 0.36 mg
- Riboflavin
- 0.55 mg
- Niacin
- 14.5 mg
- Folate
- 47 mcg
- Water
- 239 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Dice the red bell pepper, green bell pepper, and red onion. Halve the cherry tomatoes, mince the garlic, and roughly chop the fresh parsley.
Thoroughly pat the mackerel fillets dry with paper towels. Season the flesh side generously with sea salt and press the coarsely cracked black pepper firmly into the fish so it adheres.
Heat 15ml of olive oil in a large frying pan over medium heat. Add the diced bell peppers, red onion, and minced garlic. Cook, stirring frequently, until the vegetables begin to soften and become fragrant.
Add the halved cherry tomatoes to the pan. Cook until the tomatoes begin to soften and release their juices, creating a light sauce. Stir in the lemon juice and half of the chopped parsley. Transfer the warm salsa to a bowl and cover to keep warm.
Wipe the frying pan clean and return it to medium-high heat with the remaining 15ml of olive oil. Once the oil is shimmering, place the mackerel fillets skin-side down. Gently press down on the fillets with a spatula for the first 15 seconds to prevent them from curling. Cook for 3 minutes, then carefully flip and cook the flesh side for 1 to 2 minutes until the internal temperature reaches 63 degrees Celsius (145 degrees Fahrenheit).
Spoon the warm bell pepper salsa onto serving plates, spreading it out to form a bed. Lay the seared mackerel fillets skin-side up on top of the salsa. Garnish with the remaining fresh parsley and serve immediately.
Chef's Notes
- Cracking black pepper coarsely with a mortar and pestle or the bottom of a heavy pan provides a vastly superior texture and burst of flavor compared to finely ground pepper from a shaker.
- Mackerel is a rich, oily fish. The acidity from the blistered tomatoes and lemon juice in the salsa is crucial for cutting through that richness and balancing the palate.
- Scoring the skin of the mackerel with three shallow, diagonal cuts before cooking can help prevent the fillets from curling and allows the seasoning to penetrate deeper.
Storage
Refrigerator: 2 days — Store mackerel and salsa in separate airtight containers.
Reheating: Gently reheat the salsa in a pan over low heat. Eat the mackerel cold or gently warm it in a skillet to avoid overcooking and drying out the flesh.
Troubleshooting
Mackerel skin sticks to the pan and tears when flipping.
Cause: The pan was not hot enough before adding the fish, the skin was too wet, or the fish was moved before a crust formed.
Fix: Carefully slide a thin metal spatula firmly under the skin to release it. If it tears badly, serve the fish skin-side down to hide the damage.
Prevention: Thoroughly pat the fish skin dry, ensure the oil is shimmering before adding the fillets, and do not move the fish for the first few minutes of cooking.
Mackerel fillets curl up into a U-shape when placed in the pan.
Cause: Proteins in the fish skin contract rapidly when exposed to high heat.
Fix: Cannot be completely reversed once curled, but continued pressing may flatten it slightly.
Prevention: Press down gently but firmly on the fish with a spatula for the first 15 seconds of cooking.
Cultural Context
Mackerel has a long history in coastal European and Mediterranean diets, celebrated for its rich flavor and high omega-3 fatty acid content. Pairing this robust, oily fish with a warm, acidic salsa reflects the traditional Mediterranean culinary philosophy of balancing rich seafood with bright, fresh, and highly acidic vegetable accompaniments.
