Cooking bags can be used in the roaster oven as long as the bag does not touch the sides, bottom or lid. They are not sanitary, may cause a fire and can emit toxic fumes. Intense heat may cause a bag to ignite, causing a fire in the oven. The ink, glue, and recycled materials in paper bags can emit toxic fumes when they are exposed to heat. Instead, use purchased oven cooking bags.
Cooking is by indirect heat and is accomplished with a covered outdoor grill or smoker.
Instead, a pan of water is placed beneath the grilling surface to catch the fat and juices which drip from the turkey as it cooks. This prevents a flame up which could burn the turkey. Cooking is by smoky, hot air. Turkeys 16 pounds or less are recommended for safe smoking. Do not stuff the turkey.