Corn syrup

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Tate & Lyle brand Corn Syrup being moved by tank car

Corn syrup is a syrup, made using cornstarch as a feedstock, and composed mainly of glucose. A series of two enzymatic reactions are used to convert the corn starch to corn syrup. Its major use is in commercially prepared foods as a thickener and for its moisture-retaining (humectant) properties which keep foods moist and help to maintain freshness. Because of its mild sweetness, corn syrup may be used in conjunction with very intense sweeteners.

Corn syrup is used to soften texture, add volume, prohibit crystallization and enhance flavor. ^[1]

The more general term glucose syrup is often used synonymously with corn syrup, since the former is most commonly made from corn starch.^[2] Technically glucose syrup is any liquid starch hydrolysate of mono, di, and higher saccharides^[3] and can be made from from any sources of starch; wheat, rice and potatoes are the most common sources.

High-fructose corn syrup (HFCS) is a variant in which other enzymes are used to convert some of the glucose into fructose. The resulting syrup is sweeter and more soluble.

It is in trend for corn syrup to be flavored with vanilla extract.^{[citation needed]}