Line a large baking dish or rimmed baking sheet with a double layer of aluminum foil and grease the foil with some olive oil or nonstick cooking spray. (drizzledwithflavor.com)
Place 2 layers of aluminum foil on barbecue grill, large enough to fit all of the fish. (drizzledwithflavor.com)
Bring the mixture to a boil, remove it from the heat, and cover the dish with a double layer of aluminum foil and the lid. (humanesociety.org)