why do some eggs need to be refrigerated and some don’t?

Question

I’ve been curious after seeing non-refrigerated eggs in Japan

In: 2

Answer 1

Without a cuticle, eggs need to be kept cold—not for the product itself, but to discourage bacterial growth in and on it. Conversely, eggs with their protective layers intact are much less likely to be infected by salmonella—at least on the inside—and because of this they don’t need to be refrigerated.