Deli Meats (Prepackaged and Store-Sliced)
A number of companies are re-examining the shelf life and dating of their packaged luncheon meats because of concern over listeria, says Sara Lilygren, spokeswoman for the American Meat Institute.
This disease-causing bacteria packs a double punch: It grows at refrigerated temperatures and won't be killed through cooking, since consumers traditionally eat deli meats straight from the package. Additionally, during the course of their market research, companies have been "shocked" to discover how long consumers keep these products, says Lilygren.
While the bologna made by one manufacturer may have a slightly different shelf life than another's, the US Department of Agriculture (USDA) recommends that consumers store unopened luncheon meats in their refrigerator for no longer than two weeks after they buy them, or no longer than one week after the sell-by-date. Once that package has been opened, however, use the bologna within three to five days, says the USDA.
Giant supermarkets recommend you use meats sliced for you at a deli counter within three to four days. And make sure to repackage all deli meats in sealed containers or zippered bags, says Lilygren.