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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
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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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Old 06-17-2014, 05:53 PM
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does home canned food have a shelf life that is as good /better / or worse than commercially processed caned foods?

and is "canning" better that preserving food in clear Jars ???
Old 06-17-2014, 06:34 PM
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Quote:
Originally Posted by dm1911 View Post
does home canned food have a shelf life that is as good /better / or worse than commercially processed caned foods?

and is "canning" better that preserving food in clear Jars ???
Properly home canned foods last just as long as commercial products; this is backed by science. And even longer when acidic foods are concerned.
Home canned in jars needs shelter from light though, as light degrades the contents.

*I trust home canned foods more than commercial too. At home, I am quality control. No lazy workers taking shortcuts or computerized equipment malfunctions. There will be NO mass E-coli, Salmonella and other tainted foods from my kitchen. I source the ingredients and control the whole process, start to finish.

Last edited by MTShawn; 06-17-2014 at 08:51 PM..
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Old 06-17-2014, 06:45 PM
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I have seen juice and apple sauce turn nasty colors when stored in plastic as little as 6 months past the sell by date, but I have never had a problem with glass or metal. Also I store everything in the dark.
Old 06-17-2014, 06:49 PM
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Home canning IS preserving food in glass jars. Nobody has the equipment at home to make actual cans of food.
Old 06-17-2014, 06:57 PM
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How do I convince the kids that expiration dates are really 'best by' dates? Some of them are recent escapees from high school foods classes where the teacher fed them some oddball safety info. For awhile afterwards, they refused to eat meat if I'd had it in the fridge for a week. And forget leftovers..they are still iffy on those. They wouldn't even eat food I'd cooked and frozen in the deep freeze thanks to that class. It doesn't help that when they're grandma was still living on her own(assisted living now), she repeatedly gave us food from her pantry that was way past date..not all of that was canned food, though. This was before I started reading about food storage...
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Old 06-17-2014, 07:22 PM
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Quote:
Originally Posted by ksmama10 View Post
How do I convince the kids that expiration dates are really 'best by' dates? Some of them are recent escapees from high school foods classes where the teacher fed them some oddball safety info. For awhile afterwards, they refused to eat meat if I'd had it in the fridge for a week. And forget leftovers..they are still iffy on those. They wouldn't even eat food I'd cooked and frozen in the deep freeze thanks to that class. It doesn't help that when they're grandma was still living on her own(assisted living now), she repeatedly gave us food from her pantry that was way past date..not all of that was canned food, though. This was before I started reading about food storage...

Ha ha!! Good luck! I recently visited a young relative (and by "young" I mean "over 40") who threw away an unopened box of sugar because of the date on the box. Yes, plain ordinary white sugar. I did my best to explain, but by then the sugar was in the trash can. Sigh.
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Old 06-17-2014, 07:29 PM
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Quote:
Originally Posted by ksmama10 View Post
How do I convince the kids that expiration dates are really 'best by' dates? ...
Show them this. This states that properly canned foods do not spoil.

From the USDA:

Quote:
Canning is a way to store food for long periods of time. It is a method of
preserving where food is placed in airtight, vacuum-sealed containers and heat
processed at 250 F (121 C). This destroys microorganisms and inactivates
enzymes. As the food cools, a vacuum seal is formed that prevents any new
bacteria from getting in. Since the food in the container is commercially sterile,
it does not spoil.
Once the container is opened, however, bacteria can
enter and begin growing in the food. Any unused portions must then be
refrigerated in clean containers.
http://www.fsis.usda.gov/wps/wcm/con...df?MOD=AJPERES
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