I ended up adding a couple other ingredients (some ground ginger and a dash of garlic powder) but it turned out very similar.
I got some really great looking Steelhead Trout from Whole Foods and threw it in with the marinade right away. Left it in the fridge for about an hour (Wanted it that night, didn't want to wait any longer!)
Broiled Steelhead in Teriyaki SauceIngredients
2 Salmon/Steelhead fillets (about a pound)
3 tbsp light soy sauce
3 tbsp mirin or sweet sherry
2 tbsp sake or dry white wine/sherry
2 tsp sugar
1/2 tsp ground ginger
dash of garlic powder
sesame seeds to garnish
1. Mix everything but the sesame seeds and salmon together.
2. Marinate the Salmon in the sauce for at least an hour (overnight is ok)
3. Bake the fish for about 10 minutes at 350F. You may have to bake the fish a little longer depending on how thick it is.
4. After baking, turn on the broiler for about 4-5 minutes to sear and to continue cooking.