Preheat oven to 350 degrees F. Combine vinegar, soy sauce and honey in small saucepan over high heat. Mix 1 tablespoon cold water and cornstarch in small bowl. Whisk into soy mixture. Bring to boil, stirring constantly. Reduce heat to medium; simmer until mixture thickens to glaze, stirring frequently, about 2 minutes.
Pour 1/2 cup glaze into shallow baking dish. Add fish; turn to coat with glaze. Transfer to rimmed baking sheet. Bake until fish is opaque in center, about 18 minutes. Spoon remaining glaze over fish. Broil until glaze is bubbling and begins to caramelize, about 2 minutes. Using metal spatula, transfer fish to plates. Serve with Ginger-Butter Sauce.
Combine wine, shallots and 2 tablespoons chopped ginger in heavy medium saucepan over high heat. Boil until mixture is reduced to 1 cup, about 15 minutes. Add whipping cream and simmer until mixture is reduced to 1 1/4 cups, about 15 minutes. Remove from heat. Add butter 1 piece at a time, whisking mixture until each piece is melted before adding next piece. Strain sauce into medium bowl, pressing on solids. Stir in remaining 1 teaspoon ginger. Season to taste with salt and pepper. (Can be made 1 day ahead. Cover and chill. Rewarm over low heat before using.).