How to tell if eggs have gone off and bad

How to Tell If Your Eggs Have Gone Bad: A Comprehensive Guide

In the UK, eggs are a staple in many households, whether for breakfast, baking, or a quick snack. But how do you know when your eggs have passed their prime? Here’s a straightforward guide to help you determine if your eggs are still good to eat or if they’ve gone bad.

1. The Float Test

This is one of the most reliable methods and requires nothing but a glass of water:

Procedure: Fill a glass with water and gently place the egg in it.

Good Egg: If the egg sinks and lies flat on the bottom, it’s fresh.

Older Egg: If it stands upright on the bottom, it’s still usable but not as fresh.

Bad Egg: If it floats to the top, it’s definitely gone bad. The reason behind this is that as eggs age, the air cell inside them grows larger, making them more buoyant.

2. The Sniff Test

Your nose can be a surprisingly effective tool:

Procedure: Crack the egg onto a plate or into a bowl.

Good Egg: A fresh egg will have little to no smell.

Bad Egg: If you detect a foul or sulphur-like smell, it’s best to discard the egg. This smell indicates that the egg has spoiled due to bacterial growth.

3. The Visual Inspection

Sometimes, you can tell just by looking:

Fresh Egg: The yolk should be round and the white (albumen) thick and cloudy.

Older Egg: The yolk might be flatter, and the white thinner and more spread out.

Bad Egg: If you see any signs of discolouration, especially green or iridescent colours, or if the egg is overly watery, it’s time to throw it out.

4. The Shake Test

This one requires a bit of caution:

Procedure: Hold the egg up to your ear and give it a gentle shake.

Good Egg: You should hear very little to no sound.

Bad Egg: If you hear a sloshing sound, it might indicate that the egg is old and has more air inside, or worse, it could be spoiled.

5. The Egg Date

Eggs in the UK often come with a ‘best before’ date:

Best Before: This date indicates when the egg is at its freshest. However, eggs can still be used after this date if they pass the other tests mentioned.

Use By: If eggs are sold as pasteurised in the shell, they might have a ‘use by’ date, which should be strictly adhered to for safety.

Additional Tips:

Storage: Always store eggs in the fridge. The temperature helps slow down the aging process.

Cooking: If an egg is a bit older but not bad, it might still be fine for cooking or baking where it will be thoroughly heated.

Conclusion

While the methods above are generally reliable, if in doubt, it’s always better to err on the side of caution. Spoiled eggs can lead to food poisoning, which is best avoided. Remember, your senses are your best tools – if something looks, smells, or feels off, trust your instincts and bin it, end of the day eggs don’t cost a lot.