High-fructose corn syrup (HFCS) is any of a group of corn syrups which have unergone enzymatic processing in order to increase their fructose content and are then mixed with pure corn syrup (100% glucose) to reach their final form. The typical types of HFCS are: HFCS 90 (used almost exclusively in the production of HFCS 55) which is approximately 90% fructose and 10% glucose; HFCS 55 (most commonly used in soft drinks) which is approximately 55% fructose and 45% glucose; and HFCS 42 (used in a variety of other foods, including baked goods) which is approximately 42% fructose and 58% glucose.