How do I tell if an egg is bad

Checking Egg Freshness and Safety

Detecting a bad egg is straightforward using sensory checks: visual inspection, smell, and simple tests.

How to check:

  • Visual inspection: look for cracks, sliminess, or powdery mold on the shell.
  • Smell: a rotten egg has a strong sulfurous odor whether shelled or cracked open — discard immediately.
  • Float test: place the egg in a bowl of water. Fresh eggs sink; older eggs may stand upright or float because of an expanding air cell. Floating eggs should be discarded for quality reasons.

When in doubt:

  • If the egg has any off smell after cracking, don’t taste — throw it out.
  • Use cooked eggs within recommended storage times to avoid risk.

These checks reduce the chance of using spoiled eggs and help keep meals safe.