Grilled marinated salmon

Makes 4 servings1/4 cup soy sauce 1/4 cup rice wine vinegar 2 tablespoons granulated sugar 1 tablespoon vegetable oil 1 teaspoon mustard powder 1 teaspoon ground ginger 1 teaspoon ground black pepper 2 pounds salmon filetsIn a medium bowl, combine the soy sauce, vinegar, sugar, oil, mustard powder, ginger and ground black pepper.Place the salmon in a shallow, nonporous dish and pour the marinade over the salmon. Cover and marinate in the refrigerator for at least 1 hour, turning occasionally.Preheat an outdoor grill for medium high heat and lightly oil grate.Grill the fish for about 3 to 4 minutes per side, or to desired doneness.Makes 4 servings.