Corn syrup
Corn syrup is a highly-refined, quickly-absorbed light colored syrup derived from corn. It is made using cornstarch, and composed mainly of glucose. The pulpy middle layer called cornstarch is first separated from the outer husk and the inner germ layer. The cornstarch is then stored in giant vats, where natural enzymes are added to break it down into glucose. It is these sugars which are heated and turned into what we call corn syrup. The light form of corn syrup may have vanilla flavoring added, while the dark corn syrup has a stronger natural flavor.