Ingredients
Method
1.Place potatoes into a large saucepan and cover with water. Add salt, bring to the boil, covered, then tilt the lid; cook 10 minutes, until tender. Drain, halve and cool slightly, then toss with half the oil.
2.Preheat grill plate of a covered barbecue on medium.
3.In a small bowl, combine remaining oil with garlic and lemon zest. Tear four long sheets of foil and fold over to make squares of double thickness. Grease lightly with oil.
4.Place a fish fillet onto each piece of foil. Spoon garlic mixture over.
5.Top with tomatoes, olives and rosemary. Season to taste. Fold foil over to enclose fish. Seal edges tightly.
6.Place fish parcels on unheated flat plate and potatoes onto grill plate. Close cover of barbecue.
7.Cook 15-20 minutes, until fish flakes easily when tested with a fork, opening the barbecue once to turn potatoes. Serve fish and potatoes with salad, if liked.