If you've ever wondered just how long the boxes or cans of food in your pantry really last or if the food storage grandma bought in 1980 is still okay to eat, you're not alone. Even expiration dates are a tricky thing to navigate.

Today reports, "Sell by dates and best by dates are not actually mandated by the Food and Drug Administration (FDA). Unless it’s for infant formula, the dates on packages are voluntarily provided by the manufacturers. Stores can even sell products that are weeks or months “past” their dates."

Put your knowledge to the test, and enter to win a year's supply of food storage from Deseret Food Store.