In a mixing bowl combine soy sauce, sugar, lemon juice, wine, shallots, garlic, and ginger; mix well. Place salmon fillets in a resealable plastic bag. Pour marinade over salmon. Seal bag and marinate in refrigerator for 2 hours.
Just before grilling salmon, make the creamed green onions: In small saucepan melt butter. Add green onions and cook over low heat 3 to 5 minutes or until opaque. Season with salt and pepper. Add cream and stir to heat through. Keep warm.
Remove salmon from marinade; reserve marinade. Brush marinated fillets lightly with oil. Place fillets in centre of cooking grate. Grill 6 to 10 minutes or until fish is opaque and flesh flakes easily with a fork, turning once halfway through grilling time.
Meanwhile, process marinade in blender or food processor until smooth. Pour into a small saucepan and bring to a boil; simmer one minute. In small bowl combine water and cornstarch. Add cornstarch mixture to heated marinade; stir until slightly thickened.
To serve, pour some marinade on each plate, top with some creamed green onions, top with salmon fillet, and sprinkle chives over each fillet.
Makes 4 servings.