5 Ways to Tell if Canned Tuna Is Still Good

Check the can before opening Look for bulging, heavy rust, or dents along the seam. Bulging means gas buildup and a botulism risk—toss it.

Inspect for leaks A pinhole leak or any dent that broke the seal means bacteria could have entered. Throw the can away.

Trust the expiration date Canned tuna stays safe for years past the date, but quality eventually drops. If it’s far past expiration, expect worse texture and taste.

Smell it when opened If it smells sour or unpleasantly fishy, don’t eat it. If it smells like normal tuna, it’s fine.

Look for discoloration Beyond normal dark spots, any unusual color means spoilage. Your nose is more reliable than your eyes here.