Kellogg’s includes manufacture codes on products to show customers the date by which they should consume them. You can still eat Kellogg’s products after the printed date, but vitamin and mineral content usually decline past the product’s expiration. Kellogg’s uses different expiration codes for different products; they usually consist of a combination of numbers and letters. Learning how to read expiration codes on Kellogg's products will enable you to determine if your cereal is past its consumption date.
Locate the product code on the top flap of the cereal box.
Read the first three letters or two numbers to determine the product's expiration month. For example, a product that expires in February will start with "FEB" or "02."
Interpret the two numbers following the first three letters or first two numbers as the product’s expiration day. The "01" in a product with the code "FEB 01 2010 AOJ" or "020110AB" represents the first day of the month--in this case, February.
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Read the last two or four numbers following the expiration day as the expiration year. The "2010" in a product with an expiration code "FEB 01 2010 AOJ" represents year 2010, as does "10" in a product with an expiration code "020110AB."