GSG is Glucosyl Steviol Glycosides,also named as Enzyme Modified Stevia.Steviol glycosides was extracted from Stevia rebaudiana as raw material .The glucose group was transferred from maltodextrin to steviol glycosides through the catalysis of glucosyltransferase .
GSG is a natural flavor according to the 21CFR regulation of the U.S. Food and Drug Administration (FDA).According to the EU flavor regulation,EC no. 1344/2008,GSG is called "natural flavor"