SECOND HELPINGS
McSushi and a Happy Yaki Soba Meal: Given the dreadful nutritional fare at most fast-food operations–oily fried chicken, greasy pizzas, fat-laden burritos and artery-clogging burgers–you’d assume there might be a niche in the health-conscious 90s for a reasonably priced, reasonably nutritious, quick-service meal. And what ethnic fare is better suited…