Combine cornflake crumbs and sesame seed.
Brush fish with soy sauce.
Season with salt and pepper.
Spread one side of each fillet with sour cream; press coated side in crumb mixture.
Repeat spreading with sour cream and coating other side of fillets.
Place the coated fish fillets in well-greased wire grill basket.
Grill fish over medium-hot coals about 8 minutes.
Turn fish and grill till fish flakes easily with a fork, about 8 minutes more