Prepare the Marinade: In a mixing bowl, combine the olive oil, white wine vinegar, minced garlic, oregano, salt, pepper, and lemon juice. Whisk everything together until well combined.

Marinate the Mackerel: Place the mackerel fillets in a shallow dish or a resealable plastic bag. Pour the marinade over the fillets, ensuring they are well coated. Cover the dish with plastic wrap or seal the bag, then let it marinate in the refrigerator for at least 30 minutes. This enhances the flavors and tenderizes the fish.

Preheat the Oven: While the fish is marinating, preheat your oven to 400°F (200°C).

Bake the Mackerel: Once marinated, place the fillets on a baking tray lined with parchment paper. Pour any remaining marinade over the top. Bake in the preheated oven for about 10 minutes or until the fish flakes easily with a fork.

Serve: Remove the tray from the oven. Garnish with freshly chopped parsley before serving. This dish pairs wonderfully with a side of roasted vegetables or a fresh salad.

Variations

Spicy Marinade: Add a pinch of red pepper flakes to the marinade for a spicy kick.

Herb Variation: Experiment with different herbs like thyme or basil instead of oregano to customize the flavor.

Grilled Option: Instead of baking, you can grill the mackerel for a smoky flavor. Just make sure to oil the grill grates to prevent sticking.