Not sure what to make of that date on your beef or bagged lettuce? Dates on foods can be confusing, and not all are the same.

A "sell-by" date tells retailers when to remove products from shelves. You should buy the food before that date, but it's often fine to use afterward.

For example, milk may be okay for 5 days or so and eggs for 3 to 5 weeks after purchase. Poultry and seafood should be cooked or frozen within a couple of days after purchase.

A "best if used by" date has to do with quality, not safety. It indicates when the product may start losing flavor or nutritional value.

Then there are those mysterious dates on cans. They often refer to the time of manufacture and are not intended as a guide for consumers. Whatever the date, always pay attention to storage and handling.

Avoid cans and packages that are damaged, which may affect quality. Refrigerate perishable foods within an hour or two after purchase. And store other foods in a cool, dry place.

Above all, let common sense be your guide: If in doubt, toss it out.