If you don't wash the factory coating off of your farm eggs they can sit on a counter for a long time. a couple weeksI think that is true. I believe it has to do with a bleaching process store-bought "fresh" eggs go through to sanitize the outside of the eggs, which destroys the protecting membrane of the eggs. When was in Brazil I was initially surprised that their eggs weren't refrigerated, and I found out they don't (at least back in 1990s) didn't do that bleaching process either, so the eggs were stable at room temp. much longer.
They'll sit in a refrigerator for a very very long time. months
Mineral oil does keep the oxygen out of them for months too if you wash the factory coating off for whatever reason.
The jar method above does work. They taste funky though.
I have tested the mineral oil theory for 3 months, then 6 and 9. That's about long enough.
But in this scenario you'll be eating them daily anyways do it's a moot point to plan on long term storage.
We have produced our eggs for longer than I can remember. We don't bother selling them but I give some away from time to time to friends.
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