5 Methods to Determine Egg Freshness

Have you ever cracked open an egg into a bowl of ingredients and wondered if it was still safe to eat? Eggs can be challenging to assess for freshness due to their opaque shells concealing the condition of the contents within.

However, there are straightforward methods to determine whether an egg is fresh and preventive measures to extend their shelf life. In this article, we will explore these tips to help you confidently decide if your eggs are still edible.

1. Check Expiration Dates

Eggs purchased from supermarkets come with a recommended use-by date printed on the packaging. In France, regulations mandate that eggs cannot be sold after 7 days before this minimum durability date (Ddm). If you source eggs from a farm or local supplier, note that they should be consumed within 28 days of laying (Dlc), provided the shells are intact. Proper storage in the refrigerator can extend their shelf life up to 58 days from laying.

2. Use Your Nose

Just like other perishable foods, eggs can develop a distinctive odor once past their expiration date. If you suspect an egg is expired, give it a sniff. A foul smell indicates spoilage and suggests the egg should be discarded.

3. Inspect the Shell

Visually inspect the eggshell before cracking it open. A powdery or viscous appearance, along with cracks, can indicate spoilage or mold growth. If the shell appears dry and clean, proceed to crack the egg into a separate bowl and look for any abnormal discoloration such as blue, pink, black, or green in the egg white or yolk. These colors may signal bacterial contamination.

4. Conduct the Water Test

Immerse the egg in a bowl of water to determine its freshness:

• If the egg sinks and lies horizontally at the bottom, it is fresh and safe to eat.
• A slightly tilted position indicates the egg is still edible but should be consumed soon.
• If the egg floats, it has likely spoiled and should be discarded. As eggs age, moisture evaporates through microscopic pores, causing them to float due to increased air pockets.

5. Try the Candling Technique

Candling involves using a light source to examine the inside of an egg. This method can help determine the size of the air pocket within, which expands as the egg ages due to moisture loss. A larger air pocket indicates the egg is older.

While some foods can be safely consumed past their expiration dates, including certain canned goods and dried products, it is crucial to adhere to recommended guidelines for perishable items like eggs, dairy, and meats to avoid foodborne illnesses.

By following these tips, you can confidently assess the freshness of your eggs and make informed decisions about their use in cooking or baking. Taking these simple steps ensures you enjoy safe and delicious meals while minimizing food waste.