Steps
1. Preheat your grill or grill pan over medium-high heat.
2. In a small bowl, mix the olive oil, lemon juice, lemon zest, minced garlic, parsley, salt, and pepper to create the herb sauce.
3. Brush the mackerel fillet with a little olive oil and season with salt and pepper on both sides.
4. Place the mackerel on the grill, skin-side down, and cook for about 4-5 minutes.
5. Carefully flip the fillet using a spatula and grill for another 3-4 minutes until cooked through and flaky.
6. Remove the mackerel from the grill and drizzle the lemon herb sauce over the top.
7. Serve with lemon wedges on the side.