Expiration DatesWe get a lot of calls about eggs and expiration dates. Remember to always purchase eggs before the “sell by” date stamped on the carton. Once you have the eggs home, they can be safely used for another 3 to 5 weeks. The “sell by” date will have passed during the storage time but they are still safe to use.
An egg will float in water when the air cell inside has enlarged enough to make the egg buoyant. This means the egg is older, but it may still be safe to use. Break the egg into a bowl to examine it for an off-odor or unsuitable appearance before you decide to use it or toss it away. A spoiled egg will have an unpleasant odor when you open the shell—raw or cooked.
Never buy cracked eggs; bacteria can enter an egg through the crack. If eggs crack on the way home from the store, break them into a clean container, cover tightly, and keep refrigerated. You must use them within 2 days. Do not worry if the eggs crack during hard boiling; if they do the eggs are still safe