Instructions: Put miso in a small bowl and slowly add mirin, stirring constantly, until a paste is formed. Add freshly ground black pepper and stir.

Rub mixture onto fish fillets to coat completely. Enclose each piece of fish tightly in plastic wrap and refrigerate for 4 to 6 hours.

Preheat broiler. Unwrap fish, scraping marinade from plastic wrap and reserving. Make sure there is a thin layer of miso paste remaining on fish.

Place fish on a baking sheet sprayed lightly with non-stick vegetable spray.

Broil 4 minutes. Using a pastry brush, brush remaining marinade onto fish and broil 1 minute longer. Do not overcook. Serve immediately.

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