Thaw the fish, wash, clean, and pat dry with paper towels. Half an hour before grilling, rub with salt on all sides, tuck lemon wedges inside, and sprinkle with fish seasoning.

Grill the mackerel over coals on medium heat.

Turn the fish often - it cooks very quickly.

After 15 minutes the mackerel is ready. Remove from the grill and serve hot.