Eggs are one of the most common items in any grocery cart, yet many shoppers overlook the information printed on the carton. Those small numbers and codes may seem confusing, but they can tell you a lot about the freshness and quality of the eggs you’re buying. Understanding these details can help you make better choices and avoid unpleasant surprises in the kitchen.

One of the most important markings is the Julian date, a three-digit number that indicates the day of the year the eggs were packed. For example, “001” represents January 1, while “365” represents December 31. Unlike the sell-by date, which is mainly intended for retailers, the packing date provides a more accurate picture of how fresh the eggs actually are when you purchase them.

Another useful code is the plant identifier, usually beginning with the letter “P.” This code shows where the eggs were processed. If a food safety recall occurs, health officials often reference plant codes so consumers can quickly determine whether their eggs are affected. Knowing how to find this information can provide peace of mind and help protect your household.

Many people rely on the floating egg test to judge freshness, but it is not always reliable. While older eggs may float because they contain more air, the best way to assess freshness is by checking the packing date on the carton. Taking a moment to read these labels can help ensure your eggs are fresh, safe, and ready for your next meal.