High-fructose corn syrup (HFCS) is any of a group of corn syrups that has undergone enzymatic processing to increase its fructose content, and is then mixed with pure corn syrup (100% glucose), becoming a high-fructose corn syrup; the types are: HFCS 90 (mostly for making HFCS 55), approximately 90% fructose and 10% glucose; HFCS 55 (mostly used in soft drinks), approximately 55% fructose and 45% glucose; and HFCS 42 (used in most foods and baked goods), approximately 42% fructose and 58% glucose.