Have you ever picked up a piece of fruit and not known exactly what it is? Maybe you were at the grocery store, or maybe you were unloading your Boston Organics produce delivery. Is that an apricot, a plum, or a pluot? Exactly what kind of apple is that?
Did you notice the sticker with the numeric code on your fruit? That's a PLU code (Product Look-Up or Price Look-Up code). PLU codes are maintained by the International Federation for Produce Standards, and you can look up codes in their searchable database. SupermarketPage has a good list of PLU codes.
Fight the power! Look up your PLU codes, and know what goes in your mouth!
Image from Organic Food Coupons