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Back in 2012 I scoured this forum and took some advice on long term storage of nuts. General advice was they don't last more than a year, however if you read through enough posts from MikeK and other find enough exceptions, there were some gold nuggets of "well, you COULD do this to maximize your storage" that were spread amongst the forum. As with most things, temperature, oxygen and light penetration make a huge difference on long term storage. So I compiled what advice I deemed best and took a chance. It's now five years later, I just popped one can today and am sharing my experience as a thank you to the community. Take it or leave it as you desire:

Which Nuts to Store
  • There were plenty that were no-go's, peanuts is a commonly rejected request so I didn't bother.
  • I Chose Walnuts, Almonds, and Sunflower Seeds (comments were these can last on longer end of scale and my family is amenable to these),
  • Kept all three in their original shells
Rest of comments below are about the walnuts and almonds.

Canning Method
  • Stored in the #10 cans self-canned,
  • Used the borrowed canner from LDS group and their food grade cans that were created just a few months earlier,
  • Used 2 each fresh 100cc (150?) oxygen absorbers.
Environmental Conditions
  • Kept in normal refrigerator settings for 2.5 years,
  • Can moved into interior home for last 2.5 years, which is air conditioned between 65 and 78 year round,
  • Can showed a little rust on outer edge, nothing penetrated interior.
Results
  • Can opened with clear "seal break" when pierced with can opener,
  • Smell as they should and look normal, IMO.
    [*]They taste great!
  • My wife, who knows raw almonds very well and especially knows the scent of rancid nuts a mile away, says they are great. I've eaten a handful, but don't yet have a good hand cracker. Just using a hammer, lol.
  • I will certainly do plenty more cans this time and use the same method, and test a few under the house which stays cool 8 months of the year and gets to 80 the other months. I already know the moisture under the house ruins the outer can and any mice eat up the labels immediately, pest control is a must.
Flavor & Freshness vs Nutrition
I should note for a modicum of completeness that a simple test of flavor and lack of staleness only indicates the nuts have not gone rancid. When storing food for long term, your goals are obviously nutrition whether you realize it or not. Most people think "If I'm starving I want anything, it doesn't have to be perfect" but in reality in a long term SHTF situation you'll need a variety of nutrient sources and it's important to realize food does not have all its original nutrition after LTS. I have no way of measuring this loss, but will at least presume, in general, a food in its natural state without modification (other than storage conditions) will retain said nutrition longer than foods heavily processed for added flavor (not talking about just adding salt or sugar to certain edibles to increase longevity). Even so, I could be wrong as I'm certainly not a food scientist and common logic does not always hold for each circumstance.

The Sunflower Seeds
I also did store sunflower seeds in their original shells, using 7mm mylar and OA, and was successful at the 2 year mark when I removed them from the refrigerator. They tasted perfectly fine and I ate about half and tossed the rest. No pictures of sunflower seeds....

Happy survivalist sharing and let's try to keep some faith in humanity!
 

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Nuts do not store long term at all.

They have unsaturated oils that go rancid within a year.

You can freeze them and get several years at most.

Just because they smell/taste fine means absolutely nothing. It just means your nose is like 90% of most people and can't detect rancidity until the rancidity is at screaming high levels. Rancid oils are toxins.

Home tests are worthless because you need a ketone test in a lab to know for sure.

Want nuts long term? Plant a nut tree. It's that simple.
 

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I do wish someone on this board had access to a lab for rancidity testing.

Nut oils are fragile, but polyunsaturated oils are well known to last longer in whole nuts/grains than if ground, sliced, or diced. My experience is that nuts do considerably better stored with oxygen absorbers than with just vacuum canning, but I've never seen anything on nuts in their shells canned that way. It would be nice to see some solid lab numbers on that, since they do keep better unshelled than shelled when raw (25% to 50% longer on average). It would also be interesting to see how getting them out of contact with all oxygen after shelling works versus intact nuts in their shell in a zero-oxygen environment. All the available data is based on either vacuum-sealed in plastic whole nuts or nitrogen-flushed shelled nuts in cans/jars.

Ideal storage for most nuts is supposed to be 0 to 10 C at 50% to 70% humidity, so I expect the fact the OP had his refrigerated for half the storage time and in a cool house the rest had a lot to do with his satisfaction when he opened the cans. He's going to get noticeably less shelf life with them stuck under the house where it gets to 80 degrees in the summer.

My recommendation would be to package with O2 absorbers and freeze. If using shelled nuts to save space, also apply some rosemary-tocopherol-ascorbic acid antioxidant before packaging. Almonds will last noticeably better than walnuts, but even walnuts and pecans should have at least a 2- to 3-year shelf life frozen in zero oxygen, and unshelled almonds should still be good for a year or two after defrosting if you stick to a 2-year rotation in the freezer.

While I agree with Zeke that the ideal solution is to plant a bunch of nut trees on your property, I am one of many for whom that advice isn't of much use. So it would be really nice to see some hard numbers on how the oils in various nuts and oil seeds fare in different storage conditions in a zero-oxygen environment.

ETA: Blue Diamond gives its raw almonds in the shell stored in ambient conditions in plastic bags a 36-month shelf life, so the OP may be quite right that those were fine after 5 years stored in cans in a zero-oxygen atmosphere. I would doubt his wife's nose if she thinks the walnuts are equally good, but she may be quite right about the almonds.
http://www.bdingredients.com/food-safety/
Unfortunately, their only canned products have been sliced/diced/chopped and/or blanched or roasted, all of which things greatly decrease shelf life, so no numbers for unshelled almonds packaged with oxygen absorbers.

ETA:*Rainy Day/Walton gives its shelled pasteurized raw almonds in #2.5 cans up to a 3-year shelf life stored at 60 degrees or less, but I have no information on what they base that on. Blue Diamond gives its whole natural pasteurized shelled almonds in nitrogen-flushed cans a 2-year shelf life for normal pantry storage (which they have to assume is going to be more like 70 degrees or above) on the linked chart, but the cans I have here have a best-by date 3 years post manufacture. I count my shelled almonds packaged with oxygen absorbers and antioxidant and frozen as good for 3 years in the freezer and another year on the shelf or 2 years in the freezer and another 2 on the shelf although I have no Rancimat numbers to prove it. In the shell, I would think that you ought to get up to 3 years in the freezer and another 2 on the shelf. (I don't have enough freezer space to freeze in-shell nuts, though.) Walnuts or pecans would have shorter storage lives. Planters dates its walnuts in nitrogen-flushed canisters for 1 year. I can't remember what Diamond gives its similarly-package walnuts with added BHT, but it may be as much as 18 months. Of note, there is research showing that most of the rancidity in walnuts is oxidative, so storing with an oxygen absorber should give much better results than vacuum packaging and somewhat better results than nitrogen flush as well.
http://pubs.acs.org/doi/abs/10.1021/jf60030a006?journalCode=jafcau
If packaged with an oxygen absorber and natural antioxidant, you should be able to store your walnuts and pecans frozen for a couple of years or frozen for a year plus a 6-month to 1-year pantry shelf life depending on temps. I would devote more of your freezer space to longer-lived nuts like almonds, though. (Note, sunflower seeds have a 1-year storage life in ambient conditions, so are intermediate between almonds and pecans or walnuts.) I really wish some of the oxygen absorber manufacturers would sponsor some rancidity studies on various varieties of nuts packaged with them rather than nitrogen flush. Given that most of the rancidity in nut oils is oxidative, there should be a real difference between storage in 2% to 3% oxygen and storage in less than 0.01% oxygen.

I agree that nuts are not long-term storage candidates other than growing them on trees, but there are ways to get them into mid-term storage on a shortish rotation. As with oils, the way to do that is to use a freezer up until the lights go out. With oils, you can also add some antioxidants to cold-pressed oils and nitrogen-flush the jars or cans for max shelf life. With nuts, you add some antioxidants and package in mylar or jars with O2 absorbers. You should be able to store a couple of years of nuts used on a regular rotation or your current harvest plus a year's backup supply off your trees. (Since nut trees don't necessarily give you a nice harvest every year, especially if you don't have an orchard-full of the things, getting a couple-of-year storage life is of interest to even most of those who have trees.)
 

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Discussion Starter #4
It was posts like Zeke's I was trying to help others interpret (temper) with my experience. No doubt he is trying to be helpful and he is a key member around here. Yes many nuts generally don't last long and can go rancid, but his post mandates people fall victim to "letting the ideal be the enemy of good". Freezer a few years or an orchard, no middle ground. "It's just that simple." Yes, planting nut trees is the best way for nuts long term (which btw, I do have an almond on my property which is why I focus on it so much). But it's difficult for lay folks to sift through generalized "dont do it" advice when we're looking for specific best-fit alternatives.

(IAmZeke) They have unsaturated oils that go rancid within a year
(Blue Diamond Site) Almonds have natural antioxidants that promote a long shelf life. In fact, they can retain their goodness longer than many other nuts and can be carried over from one year to the next by maintaining certain safeguards and controlled conditions
(NYMin) Blue Diamond gives its raw almonds in the shell stored in ambient conditions in plastic bags a 36-month shelf life, so the OP may be quite right that those were fine after 5 years stored in cans in a zero-oxygen atmosphere. I would doubt his wife's nose if she thinks the walnuts are equally good, but she may be quite right about the almonds.
As NYMin quotes, Blue Diamond states 3 years shelf life and that's without 1) oxygen absorbers (nor nitro flush), nor 2) any refrig cooling beyond ambient, and 3) not in #10 cans that prevent passive gaseous transfer, all of which is how my test was conducted. I even question the 3 years, since we know what the expiration date on canned foods represents and why it's rarely more than 2 years ahead. Is this 3 years a guaraneed Fresh By date?

At this point, I realize I have made a major blunder in my post. Everywhere it said LTS or long term really should have been medium term. I never expected to get 20 years out of nut storage. I was hoping maybe 7 years for the almonds if kept mostly refigerated and indoors. Certainly longer than 1 year or frozen only a few years. With Blue Diamonds site stating 35-45F is "ideal storage" temp, 7 years is probably feasible if I don't screw it up (seal poorly, include too much moisture, etc). Also, my test of under the house could never compare to the length of refrigerated.

Also, Zeke mentions the killer word: toxins. There are toxins and there are toxins. We unknowingly eat lots of toxic things everyday. Heck everything is toxic, like water, the only meaningful difference is dosage and the consumer. We consume toxins intentionally for side effects. I just explained this to my daughter two days ago when she saw a wine barrell. "If we put grape juice in there for years, doesnt it go bad?" Um yeah, thats what alcohol is. The old bottle of cooking oil, the last of your wheat flour, etc. I am not condoning anyone eat moldy nuts that smell rancid, you can get very sick. I also throw away those last bits in the bag, jar. I fear botulism, too.

I understand it's probably easier for a website/individuals to avoid liability by scaring away anyone tackling a dangerous area, rather than hoping they'll rely on using common sense or self-educating before they go gung-ho into storage, then get so far in with time & money a cognitive dissonance develops disabling them from their requirement to toss their investment.

With so much negativity against storing nuts, most of which originates from a valid foundation, I honestly was surprised a blast of rancidity didnt explode from the can when I broke the seal. Thus my sharing with others. But one of Zekes point is valid, I do not claim our family collection of noses can detect small (or an arguable 'reasonable' amount of rancidity), but one of us should be able to detect high or poisonous levels. But I do trust my wife who says she absolutely has a nose for rancid nuts. We ate the nuts several days ago, before we took any pics and posted here. For arguments sake, let's assume there is 'some' level of rancidity in these nuts. It's my understanding they lose their vitamins first and only long term (there's that term) or excesive consumption would cause health issues for nuts like this without any signs of rancidity we can detect. Am I wrong?

Thanks again NYMin for the detailed reply. I am a little surprised they even posted the 3 years category. The pessimist in me ponders if they ever do testing whether they would release results that raw unshelled almonds canned with OA @ ambient temps might last medium term, such as 7 years.
 

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Am I wrong?
Rancidity toxins are like all other toxins. It totaly depends on how many other toxins you consume and your body's ability to process them.

We all know smoking kills. It just takes 20 to 50 years to do it. But I doubt there has been anyone to ever smoke a pack and quit right then to die from it ultimately.

So in an absence of other factors the occasional intake of toxins is fairly safe unless you get an acute dose at once.

But here is the kicker. All toxins essentially combine in their damage. Your occasional rancid almonds combine with your daily polluted commute into the city air, combine with those shots of whiskey the night before, combine with that Lysol spray you inhaled when the wind drifted in the bathroom, combine with that stainless cleaner you got on your hands when you cleaned the fridge, combine with the gas that dribbled on your jeans when you filled up the truck the day before.......

.....it all adds up as an assault on your metabolism. If the assault remains low enough your body will neutralize it with antioxidants and process it out. But if the assaults keeps rising the body goes into crisis mode and starts shunting the toxins into fat cells in a holding pattern until you get a lot of very low toxin time to begin processing them out. In the meantime they sit there stored but still causing damage to various cells that migrate around the bloodstream.

My advice to not store nuts longer than a year if not frozen is just like telling you not to smoke. Yes, it's an absolute level of advice even though we all know that smoking a couple packs when you were a teen or having a cigar a couple times a year isn't actually a threat. It's called not promoting generally bad behavior.

Eating older nuts with low grade rancidity likely won't kill you. But it still isn't healthy. I'm not going to equivocate on bad ideas you don't have to put yourself through. We all need jobs and so many are forced to drive into the smog every day. You have to use cleaning chemicals or your home becomes a filth infested biological hazard. But you don't need old nuts to survive. So there is no reason for me to offer up pandering and caveats to be more gentle in my advice.
 

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Thanks again NYMin for the detailed reply. I am a little surprised they even posted the 3 years category. The pessimist in me ponders if they ever do testing whether they would release results that raw unshelled almonds canned with OA @ ambient temps might last medium term, such as 7 years.
The problem there is that the nut companies have ways they have always sold their product and don't see any compelling reason to retool their factories or change their packaging.

Unshelled nuts are sold bagged or in cartons, and that 3-year shelf life is of interest to the wholesalers who buy them that way. Shelled nuts are sold either bagged or jarred or in nitrogen-flushed cans/canisters for longer shelf life. Naturally, they only test shelf life for the products they sell in the packaging they use. Unless Diamond or another manufacturer sees a reason for switching to canning with oxygen absorbers that justifies retooling their factories, we aren't going to see shelf life for canned with oxygen absorbers. Quite the contrary--what I have seen in recent years in the food industry is a big shift to plastic packaging for foods even though the shelf life is less. Storage life no longer seems to be of much interest to purchasers, who rarely keep much in a pantry any more, and therefore is no longer much of a priority for food packagers.

Like you, I think where oxidative rancidity is the major issue, shelf life with oxygen absorbers is going to be noticeably better than shelf life with just nitrogen flushing. The big question is how much better. Which is why I really wish someone interested in these food storage questions had access to a laboratory for rancidity testing and the knowledge about how to test high-oil foods like nuts versus extracted oils. I don't think 7 years is likely to be achievable for nuts, but it may turn out you can get 3, similar to olive oil, for some natural nut varieties stored in cans with oxygen absorbers, with more requiring a freezer (as with olive oil).

The problem is that I just don't know, so I save my freezer space for nuts and oils to be sure a 2-year supply remains good for a decent rotation. The problem with going for a longer storage life absent testing is that one of the main reasons for storing nuts is their essential fatty acid content, which is exactly what you lose when they start to go rancid.

To add some fuel to the debate fire here, pine nuts are generally quoted as having a shelf life of only a few months, but if you buy the Italian pignolias canned in little glass jars, they are dated with a best-by 3 years from manufacture, and do seem to keep that long stored in the dark in a pantry cabinet. So packaging obviously has a huge impact on shelf life there. The problem is that there is very little to be found in the way of research on rancidity of nuts in modern food-storage packaging with oxygen absorbers, and where there is rancidity research on other products, it turns out that the answer is frequently not what was expected, so you can't go on nothing but assumptions.

OTOH, we do know that shelf life for other foods is vastly different when vacuum packed in plastic or nitrogen flushed in cans, and that the difference in shelf life and quality when packed with oxygen absorbers rather than nitrogen flushed is sufficient to have caused all the major reputable food storage companies to switch to oxygen absorbers. The info on nuts just not storing is still based on nuts vacuum packed or nitrogen flushed. I don't think anyone has gone back and retested for oxygen absorbers, and I would dearly like to see some solid numbers on that. I think they would likely move nuts into good for medium-term storage. Since they are healthy sources of protein and essential fatty acids plus a number of vitamins and minerals, I agree they shouldn't just be written off as unsuitable for storage.
 

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Rancidity toxins are like all other toxins. It totaly depends on how many other toxins you consume and your body's ability to process them.

We all know smoking kills. It just takes 20 to 50 years to do it. But I doubt there has been anyone to ever smoke a pack and quit right then to die from it ultimately.

So in an absence of other factors the occasional intake of toxins is fairly safe unless you get an acute dose at once.

But here is the kicker. All toxins essentially combine in their damage. Your occasional rancid almonds combine with your daily polluted commute into the city air, combine with those shots of whiskey the night before, combine with that Lysol spray you inhaled when the wind drifted in the bathroom, combine with that stainless cleaner you got on your hands when you cleaned the fridge, combine with the gas that dribbled on your jeans when you filled up the truck the day before.......

.....it all adds up as an assault on your metabolism. If the assault remains low enough your body will neutralize it with antioxidants and process it out. But if the assaults keeps rising the body goes into crisis mode and starts shunting the toxins into fat cells in a holding pattern until you get a lot of very low toxin time to begin processing them out. In the meantime they sit there stored but still causing damage to various cells that migrate around the bloodstream.

My advice to not store nuts longer than a year if not frozen is just like telling you not to smoke. Yes, it's an absolute level of advice even though we all know that smoking a couple packs when you were a teen or having a cigar a couple times a year isn't actually a threat. It's called not promoting generally bad behavior.

Eating older nuts with low grade rancidity likely won't kill you. But it still isn't healthy. I'm not going to equivocate on bad ideas you don't have to put yourself through. We all need jobs and so many are forced to drive into the smog every day. You have to use cleaning chemicals or your home becomes a filth infested biological hazard. But you don't need old nuts to survive. So there is no reason for me to offer up pandering and caveats to be more gentle in my advice.
Understood.

My previous post was intended to convey the difficulty for us lay to get specific advice. I posted intricate details of nuts selected, my storage methods, etc including pictures. Youre reply was general: nuts don't last long, they age to toxic levels, grow a tree, it is that simple. While that may be true in its simplicity, its not about pandering, caveats, or being gentle. Its so generic it is one step away from making a strawman argument and not really helpful.

Your reply could be copied and pasted to anyone asking for help for storing nuts, when in reality huge differences exist between pine nuts, peanuts and almonds unshelled.

I hope others who may read this post in the future can learn from that. I did learn a lot from this forum, though it did take me quite a long time sifting here and other spots trying to find a best-case solution for storing nuts as long as they can, then knowing approximately what that duration is.
 

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My previous post was intended to convey the difficulty for us lay to get specific advice. . . I did learn a lot from this forum, though it did take me quite a long time sifting here and other spots trying to find a best-case solution for storing nuts as long as they can, then knowing approximately what that duration is.
I'm with you on trying to find some solid numbers on how various nut varieties fare with current best-practices storage. I don't think the cookie-cutter numbers generally handed out on shelf life are the whole story. Not only are there big differences between almonds, pecans, peanuts, walnuts, macadamia nuts, and pine nuts in oil content and pantry storage, but most of the advice on shelf life is based on nuts bought in cellophane bags put on a pantry shelf or tossed into a freezer. Those numbers aren't likely to reflect the true shelf life in a zero-oxygen atmosphere inside an impermeable container.

But then I'm the gal who refused to accept there was no way to store brown rice for more than a year--and found it could keep for 7 with just a little work before storing it. ;)

So oils and oily foods are the hardest things to store, have a shorter shelf life than any other foods under the same storage conditions, and rancid oil is as bad for you as transfats. OTOH, essential fatty acids are essential, are probably the most overlooked and understored dietary item among preppers, and it is worth considerable effort and experimentation to find a way to include nuts and other good sources in your medium-term storage. As with oils, there are going to be real differences in shelf life between different kinds, and packaging is going to make a lot of difference as well

And grow a tree is, indeed, in much the same category of advice as grow and can all your own fruits and veggies or keep your own chickens and a cow and don't worry about storing eggs and butter. Excellent advice for those in a position to follow it, and there is no question being able to produce food versus just storing a year or two of food is the only answer to surving TEOTWAWKI. On the other hand, some of us see a value to having a year or two of stored foods for lesser emergencies, and plant an orchard or buy a cow just isn't helpful for us in our situations. For us "fake" survivalists, a discussion of other options is of interest. It's good to know that canned butter and egg crystals really will keep for 5 to 7 years, versus powdered eggs that are lucky to meet edibility standards for even 1 and butter powder that is loaded with oxycholesterols due to its processing method (also as bad for you as transfats). It's good to know precooked and dehydrated brown rice can be stored for 7 to 10 years in cans with oxygen absorbers. It would be equally good to have solid info on how long various nuts and oil seeds store in cans, jars, and/or mylar with a dose of natural antioxidants and oxygen absorbers.

My only real criticism of your approach is the lack of anything but the nose-and-taste test, which can be misleading. OTOH, if someone who is generally good at detecting rancidity doesn't detect any after 5 years, I think one can assume the nuts were probably good for at least 2 or 3 of those years. The difficulty there is all the people who think coffee is still fresh-tasting after 10 years in a can and nuts in a plastic bag are "just fine" when found after 3 years in the pantry.
 

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Understood.

My previous post was intended to convey the difficulty for us lay to get specific advice. I posted intricate details of nuts selected, my storage methods, etc including pictures. Youre reply was general: nuts don't last long, they age to toxic levels, grow a tree, it is that simple. While that may be true in its simplicity, its not about pandering, caveats, or being gentle. Its so generic it is one step away from making a strawman argument and not really helpful.

Your reply could be copied and pasted to anyone asking for help for storing nuts, when in reality huge differences exist between pine nuts, peanuts and almonds unshelled.

I hope others who may read this post in the future can learn from that. I did learn a lot from this forum, though it did take me quite a long time sifting here and other spots trying to find a best-case solution for storing nuts as long as they can, then knowing approximately what that duration is.
Be here long enough and you will realize that nuanced advice is frequently referenced for bad behavior.

I wish that readers here were more discern good options from bad but watch this place daily and you will see how aggressively stupid many members are. Sure as rain in the jungle there will be someone who points to this thread that nuts store just fine long term.

The fact is that you just don't need old nuts to survive. Even your best efforts still don't get a long term value product. So you get an extra couple years with some hard work, but it still won't help you long term after a disaster. So while it may have some esoteric value, it really isn't survival advice.

Defatted nut flour and a stock of palm or coconut oil is how you have survival-useful nuts. That or plant a nut tree.
 

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Defatted nut flour and a stock of palm or coconut oil is how you have survival-useful nuts. That or plant a nut tree.
I have to disagree with that. Nut flour and palm or coconut oil offers essentially zero EFAs. It's no substitute for nuts, just a way to get some nut flavor back in your life plus fat calories if you need a calorie boost. But it's really in the same category as all other artificial flavors/fake and highly processd foods when it comes to EFA food value--the appearance without the substance. (Plus Emergency Essentials gives their peanut powder only a 3-year shelf life, so you still get peanut butter that is only medium-term storage, not long-term, with that approach. I'd say you would be better off storing whole, raw, unretouched almonds for 3 years and grinding them into almond butter instead.)

The way to have nuts if the world ends is indeed to plant them or know where to forage them somewhere there will be no competing foragers to speak of. Or you could store some seeds for oil crops that will produce in a year instead of 5 if you need to go back to the earth once some of it has been depopulated.

Meanwhile, back where we don't all live in a ranch house, it's useful to know how to get the best shelf life out of nuts and oils that you can, enough to keep a couple of year's supply on hand. While you can survive with nary a nut, around here they are one of my staple foods, so I'd rather not. Same way I feel about brown rice. ;)

As for the fools who insist they've eaten 5-year-old nuts in plastic bags that were "just fine," so they should be fine in cans in the attic for 20, I figure when it comes down to it, Darwin will know his own. :cool:
 

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Nut flour and palm or coconut oil offers essentially zero EFAs.
Omega 6 EFA's are easy to get in all kinds of places. As long as you are getting some fat/oil source you are getting enough Omega 6.

Omega 3 EFA's are not found in any useful amounts in nuts anyway. Seeds yes, but not nuts.

So real nut butter -or- a nut flour and oil blend isn't going to change your Omega 3 situation.

Throwing a few chia seeds into either type would make a far greater difference than choosing between the two.
 

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Throwing a few chia seeds into either type would make a far greater difference than choosing between the two.
Which brings us back to how to get a good shelf life for oily foods--nuts or oil seeds, same problem. Chia seeds have a shelf life comparable to almonds. Other oil seeds, like other nuts, have less.

And I still see no point in using highly-processed defatted nut flour when it has no better shelf life than some real unadulterated nuts. There's no actual gain there, just potential loss. Almonds keep as well as coconut oil and offer lots more in the way of nutrition.
 

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...Omega 3 EFA's are not found in any useful amounts in nuts anyway. Seeds yes, but not nuts. ...
? "Serving size ¼ cup of walnuts provides: • 2.5 grams of ALA [alpha-linolenic acid], the plant-based source of omega-3 fatty acid • 4 grams of protein • 2 grams of fiber" http://webcache.googleusercontent.c.../files/walnuts.pdf+&cd=21&hl=en&ct=clnk&gl=us

As far as I know the U.S. Gov. has not yet established an RDA for Omega-3s.

"Adequate Intake (AI): established when evidence is insufficient to develop an RDA; intake at this level is assumed to ensure nutritional adequacy."

From 19 years of age to 51+ the AI for Omega-3s is +/- 1.6g: https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/

"Table 1: Adequate Intakes (AIs) for Omega-3s [5]: Institute of Medicine, Food and Nutrition Board. Dietary reference intakes for energy, carbohydrate, fiber, fat, fatty acids, cholesterol, protein, and amino acids (macronutrients). Washington, DC: National Academy Press; 2005." This may have changed in the interum. Seeds are, as you state, a much better source of Omega-3s if you have them.
 

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? "Serving size ¼ cup of walnuts provides: • 2.5 grams of ALA [alpha-linolenic acid], the plant-based source of omega-3 fatty acid
Yes, at 2.5 g/oz, walnuts are uniquely high in omega 3 for nuts, around 10 times as much as the next highest--pecans at 0.28 g in an ounce and pine nuts at 0.22 g in an ounce. Then it's pistachios at 0.07 and macadamia nuts at 0.06 g/oz. For oil seeds, chia has 4.9 g/oz, hemp hearts 3.5 g/oz, and camelina seeds 1.9 g/oz, but most other seeds are much lower. Sesame seeds have 0.10 g/oz, pumpkin seeds 0.05 g/oz, and sunflower seeds 0.02 g/oz. A blanket statement nuts are poor sources of omega 3 and seeds are good ones is inaccurate--it depends very much on the specific nut or seed. I am aware of more seeds than nuts that have a high amount, but those seeds are all still among the less commonly eaten here.

What I find most interesting is that walnuts, pecans, and pine nuts are all given similarly short shelf lives in the usual references, yet the Italians manage to package pine nuts to last for 3 years at room temp. So it would seem you can get a reasonable shelf life, one equivalent to the best shelf life for olive oil, for even high-omega-3 nuts if given the right handling and packaging. It's just really hard to get solid information on that. Olive oil has 0.2 g/oz of omega 3, so if you can get a similar shelf life for properly packaged nuts/oil seeds to that you can get for high-quality olive oil in nitrogen-flushed cans, I see no reason not to regard them as equivalently acceptable for mid-term food storage.
 

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@NY Min Since I saw the 60 Minutes episode, a few years ago, concerning the adulteration of 'virgin' olive oils from Italy by the Mafia, I tend to not have a lot of confidence in Italian packaging. ;)
 

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@NY Min Since I saw the 60 Minutes episode, a few years ago, concerning the adulteration of 'virgin' olive oils from Italy by the Mafia, I tend to not have a lot of confidence in Italian packaging. ;)
Neither do I. What I have here is a Spanish brand, a Greek brand, and some of one low-acidity Italian EVOO that has repeatedly tested authentic and has given me a smoke point to prove it. You definitely need to do some research before picking an EVOO these days. There are a couple of good California ones, BTW, but I haven't seen them at a price I wanted to pay.
 

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? "Serving size ¼ cup of walnuts provides: • 2.5 grams of ALA [alpha-linolenic acid], the plant-based source of omega-3 fatty acid • 4 grams of protein • 2 grams of fiber" http://webcache.googleusercontent.c.../files/walnuts.pdf+&cd=21&hl=en&ct=clnk&gl=us
But walnut oil is the shortest lasting oil of all. Studies have shown that most walnut oil in stores is already turning rancid before they are sold.

As far as I know the U.S. Gov. has not yet established an RDA for Omega-3s./[/url]
They would have if they had kept them labeled as Vitamin F like they called them in the beginning.
 

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But walnut oil is the shortest lasting oil of all. Studies have shown that most walnut oil in stores is already turning rancid before they are sold. ...
Oh, I agree wholeheartedly. I don't suggest anyone store walnut oil. I was just pointing out that the statement (paraphrased) that no tree nut has significant omega-3 was inaccurate. Harvested nuts would have to be used in short order.
 

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Oh, I agree wholeheartedly. I don't suggest anyone store walnut oil. I was just pointing out that the statement (paraphrased) that no tree nut has significant omega-3 was inaccurate. Harvested nuts would have to be used in short order.
Walnut oil is a definite no-go for storage oil. Walnuts themselves are another question. Canned walnuts, versus those cellophane packs, are routinely dated best-by for a 12 month shelf life, and freezer life is variously given as 1 to 2 years.

Walnut dealers store them cool in-shell for a year from harvest to harvest, and there's some interesting research from UC Davis on their keeping qualities. Variety makes quite a difference, and apparently some other undefined things also must make a difference--they had trouble getting some control walnuts to go rancid in order to evaluate the effectiveness of other things they were trying.

Some interesting tidbits in these short articles that suggest storing whole nuts in zero-oxygen packaging might lead to a longer shelf life than we're generally told.

http://ucanr.edu/repositoryfiles/1984_184_ocr.pdf-153601.pdf
http://ucanr.edu/repositoryfiles/1985_235_ocr.pdf-153634.pdf
http://ucanr.edu/repositoryfiles/1986_102_ocr.pdf-153666.pdf
http://ucanr.edu/repositoryfiles/1990_250_ocr.pdf-153787.pdf

Interestingly, germination also increases shelf life. I wonder if soaked and dried nuts would do better than raw? Deydrator heat apparently increases rather than decreases shelf life.
https://www.researchgate.net/publication/229632898_Rancidity_of_walnuts_and_almonds_affected_short_time_treatments_for_insect_control
One wonders if a combination of heat treatment just sufficient to deactivate lipase, application of a natural antioxidant, and then storage in a zero-oxygen environment might have some of the same effect on shelf life of walnuts as the processing of brown rice into minute rice does??
 
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