The validity of the claim "100% orange juice" recently came under attack after a few reports revealed some interesting facts about the process of how it's made. Apparently, during processing, commercial orange juice is "deaerated" so that it won't spoil when it's stored. Trouble is, the process of removing the oxygen also removes a lot of the characteristic natural orange juice flavor. So how does it end up tasting like orange juice in the end? Credit that to brand-trademarked flavor packs.