How long until eggs that are kept in the fridge (untouched) go bad?

About a month, if it smells when you crack it open do not use it.

I always keep my eggs in the dated carton and keep my eye on the date - with the fridge at around 4degrees C. The water test is good as well - if it floats, smell it when cracked but before it goes in the bowl.

FWIW, you might want to use two bowls. Crack each egg by itself into Bowl A for the "sniff test", and if it passes, transfer it to Bowl B. That way you don't waste eggs if you happen to crack in one that smells "off".

I've never used the "floating test" before, I just sniff each egg. Because once you have immersed the egg in water, even clean tap water, it's no longer safe to re-refrigerate it and you will have to use it right away.

One additional test which we use here in Singapore is to prod the yolk gently with a clean finger. Or if you dare, even pinch it gently. If the egg is still reasonably fresh, the membranes will be supple, and it should not break. I've picked up very fresh yolks before without breaking them; just try. A yolk which breaks too easily is probably too stale to eat.

Hope that helps. Happy weekend --

Andrew

Here's the way to find out if it is a good egg or bad egg. Put it on the floor, spin it around and around, then stomp on it. If it breaks with a popping sound it was bad. If not, well then, it was good. Do this to each egg and you will be able to tell whether it was good or bad.

When they hatch. That's where the green chickens come from...