Well the info I have read is that the suggested use by date is two years from date of purchase (as long as purchase is made from a regular retailer of the butter). Regular canned tin. I have them stored at approx. 65+/- degrees year round downstairs.
My ONLY concern is the whole oils and fats thing. Red Feather is purported to be an excellent product. I think I will remind myself to open one of the older cans and have a look at the contents. Might feed some on a cracker to the hubby if it has a good appearance and no off odors. :) Just don’t know WHAT to do with them if they seem OK, but I don’t want to hold them any longer. Seems a shame to toss them if they are viable. Prepper problem!
I’m sure it is fine as long as they’re sealed and you could smell if it is rancid.
I put stuff out at the side dumpsters near places homeless people hang out, they don’t look at dates.
I bought a case of Red Feather Butter about three years ago. I opened a can and found it rancid. I assume the others are also rancid, but did not toss them. I plan to use them as oil lamps and/or heat sources for cooking or warming food.