My mother has a similar but far simpler recipe Rose.Spatchcocked Oak Plank Canada Goose
1 Plucked and dressed Canada goose(large)
3 cups buttermilk
1 cup Dale's Steak Seasoning
3 stalks fresh rosemary
2 quarterd Vidalia onions
1 tblsp coarse sea salt
1 tblsp coarsely ground black pepper
1 9"x14" white oak grilling plank
1 roll baking twine
-Brine goose overnight in large mixing bowl with buttermilk and Dale's Seasonong.
-Soak grilling plank in water for four hours.
-Preheat pellet grill to 325.
-Arrange onion quarters on grilling plank, laying rosemary stalks on top.
-Rinse, and spatchcock goose.
-Spread spatchcocked goose over the rosemary and onions meaty side up onto grilling plank.
-Tie spatchcocked goose securely to plank.
-Sprinke with salt and pepper to taste.
-Carefully place in grill for 25 minutes for medium rare(135⁰ F).
-Remove and rest for 15 minutes.
-Clip twine, throw goose in ditch, eat plank!