Expiration dates are not expiration dates.
New York Times
By J. Kenji López-Alt
Jan. 24, 2023
Food product dating, as the U.S. Department of Agriculture calls it, is completely voluntary for all products (with the exception of baby food, more on that later). Not only that, but it has nothing to do with safety. It acts solely as the manufacturer’s best guess as to when its product will no longer be at peak quality, whatever that means.
Let’s start with the things you definitely don’t have to worry about. Vinegars, honey, vanilla or other extracts, sugar, salt, corn syrup and molasses will last virtually forever with little change in quality. Regular steel-cut or rolled oats will last for a year or so before they start to go rancid, but parcooked oats (or instant oats) can last nearly forever. (Same with grits versus instant grits.)