Only buy refrigerated eggs with clean, unbroken shells. It is best not to wash eggs before storing or using them. Washing is a routine part of commercial egg processing and the eggs do not need to be rewashed. For best quality, use within 5 weeks after bringing them home. Use within 1 week after cooking.
Shell color depends on the breed of the hen.
Yolk color depends on the feed the hen consumes. Safe Handling Wash hands, utensils, equipment, and work areas with hot, soapy water before and after they come in contact with eggs and egg-containing foods. Remove only the number of eggs needed from the carton and return the carton to the refrigerator. Cook eggs until the white is completely firm and the yolk begins to thicken but is not hard. Scrambled eggs should be cooked until no visible liquid remains.