Eggs are a foundational ingredient in kitchens everywhere, appearing in everything from omelets to baked goods.
Because they’re so widely used, verifying their freshness is essential — not just for flavor, but for food safety. Although eggs are protected by hard shells, they do spoil, and the signs aren’t always obvious. Here’s how to determine whether your eggs are still good, using practical, reliable methods.
Start With the Packing Date
Don’t confuse the expiration date with the packing date. The packing date — printed in Julian calendar format on the carton — gives a clearer picture of how old the eggs actually are. When refrigerated properly, eggs typically remain safe for four to five weeks after that packing date. For best quality, however, it’s advisable to use them within three to five weeks of purchase.
The Float Test
One of the most dependable at-home checks is the float test. As eggs age, the air cell inside them expands. That larger air pocket increases buoyancy.
To perform the test, place the egg in a bowl of water:
If it sinks and lies flat on its side, it’s fresh.
If it stands upright on the bottom, it’s older but may still be usable.
If it floats, it’s best to discard it or use it immediately with caution.
If you’re unsure how long the eggs have been sitting in your fridge — especially if five weeks may have passed — it’s safer not to take chances.
Rely on Your Senses
Your senses can also provide valuable clues.
Smell: Fresh eggs have little to no odor. A strong sulfuric or rotten smell is a definitive sign the egg has spoiled. Always smell the egg after cracking it into a separate bowl before adding it to a recipe.
Sound and Feel: Gently shake the egg near your ear. A fresh egg will produce almost no sound. If you hear sloshing, the contents have likely thinned due to aging, indicating it may no longer be good.
Appearance: Inspect the shell carefully. Cracks allow bacteria to enter, increasing contamination risk. Discoloration, unusual spots, or visible dirt on the shell are additional warning signs. While these visual and sensory checks aren’t as formally endorsed as the float test, they can reinforce your assessment.
Production Methods Matter
How eggs are produced can also influence their overall quality. For example, free-range eggs come from hens with outdoor access, allowing for more natural behavior. Many experts argue that reduced stress and improved living conditions may affect egg quality and freshness. Understanding labeling terms — such as free-range, cage-free, or pasture-raised — helps you make more informed purchasing decisions.
Prevent Kitchen Mishaps
Maintaining egg freshness protects both your meals and your health. Combining multiple checks — reviewing the packing date, performing the float test, inspecting visually, and trusting your sense of smell — provides the most reliable evaluation. Awareness of production practices adds another layer of informed choice.
With these straightforward steps, you can confidently use eggs at their peak and avoid the frustration — and potential risk — of spoiled ingredients.
