You can tell if an egg is bad using several simple methods:

Water (Float) Test

• Fill a bowl with cold water and gently place the egg in it.
• If the egg sinks and lies flat on the bottom, it is fresh and safe to eat.
• If it sinks but stands upright or tilts, it is still safe but not very fresh.
• If the egg floats to the top, it is too old and should be discarded

Sniff Test

• Smell the egg either in the shell or after cracking it into a bowl.
• A bad egg emits a strong, rotten sulfur odor.
• If you detect any off smell, discard the egg immediately

Visual and Physical Inspection

• Check the eggshell for cracks, sliminess, or powdery mold; these indicate contamination.
• Crack the egg onto a plate and look at the yolk and white:
  • Fresh eggs have a firm, rounded yolk and thick, slightly opaque white.
  • Older eggs have flatter yolks and watery, runny whites.
  • Discoloration such as pink or iridescent hues signals bacterial growth and spoilage

Shake Test

• Hold the egg close to your ear and gently shake it.
• If you hear a sloshing sound, the yolk may be watery and the egg older or bad.
• No sound usually means the egg is fresh

Using these tests together can help you accurately determine if an egg is still good or should be discarded. Always practice good hygiene and food safety when handling eggs.