The “Best by” date on canned foods like corn, green beans, and tuna is not an expiration date. Instead, it shows when the product is expected to have its best quality. When stored in a cool, dry place, many canned goods remain safe to eat for 1–2 years past the labeled date, although their taste and texture may slowly change over time.

Canned vegetables such as corn and green beans can keep their safety and nutritional value well beyond the printed date if the cans are in good condition. The same applies to tuna and other canned proteins, which often last much longer than many people realize when stored properly.

Before opening any canned food, always check for signs of damage. Rust, bulging lids, or large dents may indicate the contents are no longer safe. After opening, a foul smell, discoloration, or an unusual texture are clear signs that the food should be discarded.

As the article explains, “The ‘Best by’ date on canned goods… reflects the peak quality of the product rather than its expiration.” This means the date is about freshness, not necessarily safety.

Knowing the difference between a “Best by” date and an expiration date can help people make informed choices, enjoy food safely, and reduce unnecessary waste instead of throwing away perfectly good canned products.