Low-acid foods like beans, meats, and soups can last anywhere from 3 to 5 years (sometimes more), while high-acid foods like tomatoes, fruits, or juices typically last about 1½ to 2 years.
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However, over time, even perfectly sealed cans can experience slow chemical reactions that affect flavor, texture, and — in rare cases — safety.
3. When to Toss: Warning Signs of Spoiled Canned Food
Even if the expiration date has passed, some cans may still be safe — but only if they pass the look, smell, and feel tests.
Here’s what you should check for:
Bulging or swollen can → A red flag for bacterial gas buildup (possibly Clostridium botulinum). Discard immediately.
Rust or corrosion → Weakens the can’s seal and allows air or bacteria to enter.
Leaks or sticky residue → Signs of compromised sealing or spoilage inside.
Dents, especially along the seams → Can damage the integrity of the can and allow contamination.
Hissing sound when opened → Normal for pressure release, but if accompanied by foul odor or liquid spurting, it’s spoiled.
Unusual smell or color → Trust your senses — if it looks or smells off, don’t risk it.
Even if you’re unsure, it’s better to err on the side of caution. Foodborne botulism is rare but potentially deadly, and it’s not worth the gamble over a can of beans.
