Rince and pat dry fish steaks.Place in a plastic gal, bag. In a mixing bowl mix teriyaki sause,onion,gingerand 1/2 tablespoon olive oil. Mix together and pour over fish steaks,Seal bag turn to coat fish.Refrigerate from 1 to 24 hours. The longer the better turning often.
In a small pan melt butter stir in garlic.. remove fish from bag. Oil grids on grill(oil real well) heat grill to med-hot,replace grids on grill. Place steaks on grill.brush steaks with garlic butter. Grill for 5 min.Turn brush with remaning garlic butter,grill 5-6min more....Injoy with a salaid..