The Canadian Food Inspection Agency (CFIA) is warning consumers not to consume Mérite brand of frankfurters with a best before date "AU 21" as they may be contaminated with Listeria monocytogenes. The product is sold in 375g packages and bears the establishment code CANADA 223 and UPC 0 68879 33028 4. It is distributed in Quebec only and has been voluntarily recalled by Montreal-based Briska.