Most of us have at least one lonely can tucked in the back of the pantry—beans, soup, vegetables—long forgotten until we finally pull it out and realize the date on the label passed months ago. The knee-jerk reaction is usually to toss it straight into the trash. But here’s the twist: an expired date on a can doesn’t automatically mean the food is unsafe.

Those labels—“Best By,” “Best Before,” “Use By”—aren’t as strict as people assume. In fact, they’re mostly about quality, not safety. Food manufacturers use those dates to tell you when the product will taste its best, not when it suddenly becomes dangerous.

If a can has been stored properly—somewhere cool, dry, and out of direct sunlight—it can last far longer than the date printed on the top. Temperature stability is key. High-acid foods like tomatoes, pineapple, or citrus tend to lose flavor faster and are best eaten within about a year to a year and a half. Low-acid items—beans, corn, tuna, chicken—can stay good for three to five years or even more.

The USDA goes a step further, saying that a well-stored, undamaged can is technically safe indefinitely. Over time, the quality might fade—flavor dulls, texture softens—but if the seal is intact, the food is generally safe.

However, there are clear red flags you should never ignore. Throw a can out immediately if you notice:....