Preheat broiler. Coat broiler rack with nonstick cooking spray; set aside.
In small bowl combine sugar, mustard, soy sauce and ginger. 3.Season salmon to taste with pepper and place skin side up on broiler rack. Cook, 6 inches from heat source, 3 minutes. Turn salmon; brush with sugar mixture. Broil 1 or 2 minutes more, or until sugar melts and fish flakes easily with a fork. Garnish with toasted sesame seeds, if desired.