Pre-heat the oven to 550 degrees with a roasting pan large enough to hold the bird. Pull bird out of brine and rinse extremely well. Pat dry and rub canola oil all over and inside the bird and season with black pepper. Place goose in the hot roasting pan in the oven. Let brown on top, about 20 to 30 minutes. Meanwhile, in a hot saute pan coated lightly with canola oil, add the sesame oil and saute the garlic cloves, ginger and onions until lightly brown then add the carrots and celery, about 5 minutes. Season with salt and pepper. In a large bowl, gently mix with the sweet potatoes, chestnuts and green scallions and check for seasoning. Pull the browned bird out of the oven and stuff with stuffing. Reduce oven to 325 degrees and cover with foil to prevent burning. Cook an additional 11/2 to 2 hours (depending on size of bird) or until juices run clear after puncturing between leg and breast. Let bird rest 10 minutes before slicing. Drain off fat in the roasting pan but leave at least 2 tablespoons of fat. Place roasting pan on a high burner and sautee white scallions, ginger and plums. Deglaze with both wines. Reduce by 80 percent then add stock. Reduce stock by 20 percent then add soy. Check for seasoning.
PLATING: Take out the stuffing and mound it on a large oval platter. Slice bird and present on top of stuffing. Ladle sauce around the slices.