Preparation

• Heat a gas grill with all burners on high.
• In a small bowl, combine the tomatoes, olives, garlic, oregano, and olive oil. Season to taste with salt and pepper.
• Open a medium If You Care parchment roasting bag and place it, seam side up, on a 1-rim or rimless baking sheet.
• 用橄榄油刷鱼片，然后用盐和胡椒粉调味。将它们放在袋中的中央，不太靠近后部。用番茄橙混合物在鱼上放上鱼。
• Seal the bag by folding the open end several times towards the top to snugly enclose the fish.
• When the grill reaches 425°F, set it up for indirect cooking by turning off all but one of the burners, and keep the remaining burner on high heat. Holding the sheet pan by its rimmed edge (if there is one), gently slide the fish in its roasting bag onto the cool side of the grill. Close the grill lid and cook for 15 minutes, rotating the packet once with tongs so both fish fillets cook evenly.
• Use the baking sheet to gently remove the roasting bag from the grill, and let rest for 5 minutes. Cut or tear open the bag along the top seam (be careful of the steam, which is very hot), and serve.