Date Extension DRY PRODUCT Exp. "Best if Used By" indicates that quality may decline after the date. Remove neck, giblet and gravy packet, if applicable. FROZEN PRODUCT Exp. Step 1: Heat oven to 325°F. “Use by” dates and expiration dates, however, are indicators of food safety; consuming foods past this date can have negative consequences so you should only eat them if … Date Extension DRY PRODUCT Exp. Step 2: The plastic leg clamp should be left on during cooking. "Use By" is the last date by which the manufacturer recommends the food be consumed so as to still be at peak quality. Are instant mashed potatoes safe to use after the "expiration" date on the package? Date Extension ... ob Evans Mashed Potatoes 7 days Make-N-ake Pizza Freeze 14 days Tortillas 30 days Misc: According to WebMD, there are a number of ways to classify food dates: There's the "sell by" date, the "best if used by" date, the "use by" date and the "born on" date… Potatoes last about 3-5 weeks in the pantry and 3-4 months in the refrigerator. How long do potatoes last?