Erythritol, a ployol (sugar alcohol), is a good-tasting sweetener which is suitable for a variety of reduced-calorie and sugar-free foods. It can be used as a sugar substitute in most sugar-free recipes. Erythritol has been part of the human diet for thousands of years due to its presence in foods such as pears, melons, grapes and mushrooms., , NOW Erythritol is 100% pure and derived from a corn source. Erythritol resembles sugar in consistency and taste but has a caloric value near zero. It is also a great sugar alternative for diabetics. Eyrthritol, like Xylitol, may also inhibit cavities by denying plaque bacteria the fuel (sugar) it needs to erode tooth enamel.