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Old 07-25-2011, 11:07 PM   #1
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For the first time I am faced with a stack of rusty cans. How do I decide which to use and which to throw out?
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Old 07-26-2011, 10:12 AM   #2
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Originally Posted by svReboot View Post

For the first time I am faced with a stack of rusty cans. How do I decide which to use and which to throw out?
I presume they contain food ?? If they do and are no longer hermetically sealed - a quick test to see if they are ok check if the ends of the can are swollen (not flat) -- if swollen discard.
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Old 07-27-2011, 04:39 AM   #3
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Super cautious Jeanne offering her two cents.

I am terrified of botulism, and checked our canned goods very carefully, but there were surprises everywhere.

I once opened a can of baked beans that looked perfectly okay, except for a small dent. The contents exploded out of the can - well, that was a pretty obvious indication that the contents were full of toxin.

Rusted cans are not necessarily a problem - however, the reason that rusted cans are suspect is that the rust can introduce a pinhole leak in the can, allowing botulinin spores to grow and produce toxin. That same pinhole leak can allow some of the pressure to be reduced so you might not notice any bulge - or there is toxin but not so much that the pressure has built up yet. Same argument for dented cans - the dent might introduce a small failure along the can's seam, for example.

Not much help, is it? My paranoia meant that I would boil any contents of canned food for a minimum of 5 minutes in an open/uncovered saucepan. The boil to last for 5 minutes.

See Botulism
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