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Old 02-23-2012, 04:01 PM
realc4ever realc4ever is offline
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Default canned food and dates



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so i was going to start buying canned food to prepare for things and i noticed that expiry date was two years later.

What are your professional thoughts / knowledge about the expiry dates on canned goods ? ok to eat 10 or 20 years later ? What about what some say that the metal or aluminum leeches into the food ?

thanks alot for your help.
Old 02-23-2012, 04:04 PM
Daelith Daelith is offline
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It's been shown that unless the can is compromised, the contents will be fine for decades. The only changes are nutrient content, color, and possibly taste.
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Old 02-23-2012, 04:05 PM
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If there are no dents, rust it should be good for years past expiration dates
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Old 02-23-2012, 04:25 PM
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Quote:
Originally Posted by OhioMan View Post
If there are no dents, rust it should be good for years past expiration dates
leaks & bulges also
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Old 02-23-2012, 04:46 PM
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Daelith:
I think things such as the nutrition would be utmost in considering whether or not it's good to keep canned food beyond expiration. Without the nutrition, food is just "empty".
Old 02-23-2012, 05:06 PM
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AS long as it still has a vacuum and isn't bulged out I would go 2 or 3 yrs past the date. The dates are for taste and texture anyway. And, it might depend on what's in the can according to your tastes. Metal shouldn't leach into the food unless there is oxygen present.
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Old 02-23-2012, 05:15 PM
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Same thing asked 3 days ago. Good info in that thread too:
http://www.survivalistboards.com/sho....php?p=3801973

The date on the can is a "best by" date rather than an expiration date. Hormel, Del Monte and a few other canneries, along with the FDA or USDA (forgot which) are on record as saying that canned foods are safe to eat indefinately as long as the can remains safely sealed. The key here is the can remaining safely sealed.

Since the contents are sterile, they can't actually rot or spoil unless bacteria can get inside the can somehow. But as long as the can is sealed, it can't get in.

However, over time, the taste and texture will go downhill. The nutrition does to a certain degree also. But there have been tests posted of 40+ year old canned goods that were still not only safe to eat, but still had a surprising amount of their nutrition left.

Acidic foods are the ones to watch for. The acids can react with the metal and cause pinhole leaks that aren't always noticeable from the outside. We've had a lot of posts about saurkraut and tomato products rotting in the cans. So those foods should be on a short rotation schedule just to be safe.
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Old 02-23-2012, 05:17 PM
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Quote:
Originally Posted by Frugal1 View Post
Daelith:
I think things such as the nutrition would be utmost in considering whether or not it's good to keep canned food beyond expiration. Without the nutrition, food is just "empty".
The nutrition doesn't just "go away." It slowly degrades. Testing on canned foods that were over 40 years old still showed significant levels of most vitamins and nutrients. I was surprised by those results, actually. Pleasantly surprised.
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Old 02-23-2012, 05:21 PM
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Just had a can of split pea for lunch the other day that was dated 2009. Taste was fine. It did have a little "tin" flavor but, otherwise it was good. I'm trying to use all my expired date can foods.
Old 02-23-2012, 05:54 PM
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Quote:
Originally Posted by realc4ever View Post
so i was going to start buying canned food to prepare for things and i noticed that expiry date was two years later.
Look at that can again.

Is it actually an "Expiry Date", or just a "BEST BY" date?

There is a difference.
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Old 02-24-2012, 09:23 AM
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Those dates are primarily for sheep, I think

We've got stuff in commercial cans with "use by" dates of 4-5 years ago, and so far so good

Always listen when you hit the top with the can opener, if it inhales audibly and sharply, proceed to sniffing it, if that doesn't scream at us, we'll eat it.

Another test we have is we'll pass it by the old tomcat. If he perks up and gets interested, and wants some, it's probably not "off" smelling.
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Old 02-24-2012, 06:57 PM
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Quote:
Originally Posted by MikeK View Post
Same thing asked 3 days ago. Good info in that thread too:
http://www.survivalistboards.com/sho....php?p=3801973

The date on the can is a "best by" date rather than an expiration date. Hormel, Del Monte and a few other canneries, along with the FDA or USDA (forgot which) are on record as saying that canned foods are safe to eat indefinately as long as the can remains safely sealed. The key here is the can remaining safely sealed.

Since the contents are sterile, they can't actually rot or spoil unless bacteria can get inside the can somehow. But as long as the can is sealed, it can't get in.

However, over time, the taste and texture will go downhill. The nutrition does to a certain degree also. But there have been tests posted of 40+ year old canned goods that were still not only safe to eat, but still had a surprising amount of their nutrition left.

Acidic foods are the ones to watch for. The acids can react with the metal and cause pinhole leaks that aren't always noticeable from the outside. We've had a lot of posts about saurkraut and tomato products rotting in the cans. So those foods should be on a short rotation schedule just to be safe.
That's why you can tomatoes in jars ... also, a lot of tomato cans these days are enameled or painted to prevent that issue from happening. Matter of fact, all the diced tomatoes we buy in a can anymore, in the quart cans anyway, are painted inside.

Sour kraut is the same - and it can be jarred/canned as well. Pickles, kraut, tomatoes, pickled okra and beets ... all of those do well in jars indefinitely.

If we would keep our canned goods in cool, dry places and out of direct sunlight, the food inside can last indefinitely. Even canned meats although, five years from now all canned meats will come in retort packages, as tin cans will soon be a thing of the past for meats.
Old 02-24-2012, 08:45 PM
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Quote:
Originally Posted by Gallo Pazzesco View Post
That's why you can tomatoes in jars ... also, a lot of tomato cans these days are enameled or painted to prevent that issue from happening. Matter of fact, all the diced tomatoes we buy in a can anymore, in the quart cans anyway, are painted inside.

Sour kraut is the same - and it can be jarred/canned as well. Pickles, kraut, tomatoes, pickled okra and beets ... all of those do well in jars indefinitely.

If we would keep our canned goods in cool, dry places and out of direct sunlight, the food inside can last indefinitely. Even canned meats although, five years from now all canned meats will come in retort packages, as tin cans will soon be a thing of the past for meats.
Cans have been coated for years now. But there are still a lot of folks reporting swollen or burst cans of acidic foods, as well as horrible taste after just a few years. I'm not sure what to attribute it to. But it's definately related to acidic foods.
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