How long without incubation will an egg last?

The answer depends on how you define "last". Here's a breakdown:

1. Staying Fresh and Edible:

* Refrigerated: A fresh, unwashed egg can last in the refrigerator for 3-5 weeks after the "best by" date printed on the carton.

* Unrefrigerated: Eggs at room temperature will last for about a week before starting to deteriorate.

2. Fertility:

* Unfertilized: If an egg has not been fertilized by a rooster, it will never hatch, regardless of incubation.

* Fertilized: A fertilized egg will only be viable for a limited time, generally a few days to a week at room temperature, before the embryo starts to die.

3. Spoiling:

* Unfertilized: Eventually, even unfertilized eggs will spoil. The white will become watery, the yolk will break down, and the egg may develop an off odor.

* Fertilized: A fertilized egg will spoil much faster than an unfertilized one, due to the developing embryo.

In summary:

* For eating: Refrigerated eggs can last several weeks, while unrefrigerated eggs are good for about a week.

* For hatching: Fertilized eggs need to be incubated within a few days of being laid for the best chance of hatching.

Remember: Always refrigerate eggs as soon as you get them home for maximum freshness.