You couldn’t smell it since it was frozen but a second rat has been found inside a food package in two weeks. This time the suspected rodent was in a package of frozen organic mixed vegetables imported from the United States, the nation’s food safety agency said yesterday. The contaminated product, “Willow Wind Organic Mixed Vegetables,” manufactured by Columbia Foods Inc., was immediately recalled by the Korean unit of Costco Wholesale Corp., after a consumer complained and reported the case to the Food and Drug Administration on Monday. Sales of the product have been suspended. The administration said the foreign...