Smithfield Packing Company of Clinton, NC and Tar Heel, NC is recalling approximately 216,238 pounds of Portobello Mushroom flavored pork loins because some of the product may contain an undeclared allergen. The product was prepared using an ingredient blend that contained whey (from milk), a known allergen, which was not declared on the label, the U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) announced today.