NYT Cooking: In this vaguely Cantonese turkey, the bird is roasted beneath a rich glaze of fermented soybean paste, garlic, ginger, soy sauce and alliums galore, then served with roasted potatoes basted in the sauce and drippings of the bird. It came to The Times from Dr. Carolyn Ling, a physician in Carmel, Ind., whose grandfather came to the United States in the late 19th century from southern China and s...