[rlm]

Europe is not a single country. Some countries have refrigerated eggs, some have non-refrigerated.

Denmark - European - refrigerated eggs.

See also: Every other discussion about refrigerated eggs on HN.

As far as I know, once refrigerated, always refrigerated. But if your eggs have never been refrigerated there is no need to.

[ams6110]

Pretty sure the refrigeration is just for shelf life. Refrigerated eggs are good for months (even though the expiry date might lead you to believe otherwise).

I don't know about non-refrigerated but I would guess they can't be stored as long.