Opening 9-Year-Old Flour

I had some bananas that were going bad, so I decided to make banana bread this morning before everyone else got out of bed. The problem arose when I ran out of bagged flour, so I decided to get into our long term food storage flour.

And if I’m being honest, we haven’t touched any of our bulk canned foods in years. It’s so easy to be lazy! Regardless, I figured this would be an interesting opportunity to find out if our stored flour was any good.

I grabbed this one off the shelf, probably one of the older cans:

The date might be difficult to read, but it says it was packed on November 2013, which means we must have canned it ourselves at the local LDS Home Storage Center. That was back when you had to can bulk food at the church canneries yourself; these days it’s already done, which is great!

But, because the can of flour was nearly ten years old–and because I couldn’t quite remember–I wondered how long canned flour should be good for, so I looked it up and the church’s website says up to ten years. Again, I figured that since nine is less than ten, then the flour should be fine. Right?

I opened the can and it looked good:

But I immediate noticed an off smell. It didn’t necessarily smell rancid, which they say smells “must or sour”, but metallic; it tasted funny, too. I wondered if this was a one-off problem, so I opened another can from the same timeframe and it smelled and tasted the exact same.

It was then when I noticed that there didn’t appear to be any sort of coating on the inside of the cans, like normal grocery store canned foods always have. And, because it has been so long since I’d gotten into our bulk cans, I couldn’t remember if it was normal or not for LDS Home Storage Center cans to not have inner coatings or appear to be bare metal. I couldn’t find an answer online, so I assumed it’s normal, but I don’t ever recall having the metallic smell/taste in any of our other bulk foods.

My guess is that flour tends to more readily absorb the metallic scent over years of being in storage more than other bulk foods, and that if worse came to worse the flour was probably fine to use, but my wife and I chose not to risk it and, so, I tossed the two cans I opened.

Our of curiosity, however, I found more #10 cans of flour, this time from a different batch, but there weren’t any dates on the label or can itself, so I have no idea when this was packed, lol:

By the label, this flour must have been purchased online at some point. (Good job, me, for not keeping track of such things!)

Here’s what it looked like when opened:

Again, it looked fine. Interestingly, this can did have a different coating (I believe its enamel) on the inside like you would expect, but it also smelled a tad off, though not nearly as obvious as the previous two cans of flour. This stuff, however, didn’t taste off at all, so I figure it must be a newer batch.

Now, sadly, I’m beginning to wonder about the other bulk foods I have sitting in our food storage, especially the rest of the flour. Fortunately, we don’t have much canned flour at all, choosing instead to grind wheat, which tends to last far longer.

Oh, well. Another less learned…don’t expect my never-used bulk foods to last forever. 🙂


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Comments

5 responses to “Opening 9-Year-Old Flour”

  1. Rather than guess if the flour is bad, why not ask a factory that makes cans if they can bleed off into the ingredients.

  2. Appreciate you sharing about the flour in cans, Damian.
    Lessons learned definitely. Perhaps it does have something to do with the coating not on the inside of the cans.
    This is something I’m going to take note of and keep in mind when storing cans long term.

  3. Bob Garel

    I’ve kept 25 lb of organic seven grain flour in Mylar bags with a few desiccators thrown in for 8 years with no change in odor or color.

  4. Frank

    Maybe it’s best to keep the flour in the original package and then vacuum seal the entire bag and store it inside a bucket or container.
    The other option would be to repack the flour into Mylar bags. In either case I don’t know if the taste would be affected or what the longevity.

    The cans are chew proof and sturdy, but if the metallic taste is an issue then other packaging might be preferable, but the can may still be seen as the superior long term option. Again, is taste over shelf life the priority. While the can can always be used to make something out of it, it can’t be resealed unless one has or makes a lid or cover for it whereas a Mylar bag can be cut down and resealed a couple of times before being rendered useless.
    I think if I had enough of those large glass jars if we could even find some right now, I’d try using glass jars or mason jars and vacuum sealing them with the jar adapters and electric vacuum sealer or the adapters and a brake bleeding pump.
    You can also check out YouTube on how to create a vacuum chamber with PVC pipe, some tubing and fittings. You can use a vacuum sealer, pump or brake bleeder.
    I have a dehydrator, so I am looking to buy or repurpose glass jars and vacuum seal them. This way I can store food without being totally dependent on an electric machine, plastic or Mylar bags and oxygen absorbers.

  5. Kdonat

    Next time aerate the flour a while before deciding to toss it out. Sieve or sift it into a large bowl, let it sit out to air a while, and repeat the sifting process. You may find that helps with the metallic odor.

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