“”that if you coat eggs with food grade mineral oil they will last at least 9 months with no refrigeration””
I grew up on a farm and before we had a refrigerator, our eggs were kept in the cellar in a crock (not crock pot) in a white slimey substance. I have no idea what it was called or how it was made. I do remember going down to get eggs out of it. Is there anyone here old enough to remember the same thing?
Probably a solution made with lime.
A solution sometimes called water glass. Sodium silicate. I'm not a fan of it. It changes the characteristics of the egg. But it does work. Easier to have chickens and electric lights during the winter to keep them laying.
That technique was primarily used when chickens were raised during spring through fall, and most slaughtered for winter, with a few left over to make a new flock the next year.
/johnny
I think it is sodium silicate, forget the common name. It was used to repair cracks in boilers, IIRC.
I remember!
It is called water glass. Don’t know where to get it today.