Step 1

Combine water, salt, sugar, dill, and soy sauce in a large bowl, stirring until salt and sugar dissolve. Pour salt mixture into a large zip-top plastic bag. Add ice and salmon; seal. Refrigerate 2 hours, turning bag occasionally.

Step 2

Soak the wood chips in water for 1 hour. Drain well.

Step 3

Prepare the grill for indirect grilling, heating one side to medium and leaving one side with no heat.

Step 4

Place half of wood chips on hot coals. Remove salmon from bag; discard brine. Pat salmon dry with paper towels. Place salmon on grill rack coated with cooking spray over unheated side. Close lid; grill 10 minutes. Place remaining wood chips on hot coals; close lid, and grill 15 minutes or until fish flakes easily when tested with a fork. Sprinkle with black pepper and garnish with dill sprigs, if desired.