Specification: >90% steviosides (de-bitter) ; 90% steviosides / RA>40% ; 90% steviosides / RA>60% ; 90% steviosides / RA>80% ; 95% steviosides Appearance: White crystal powder The species Stevia rebaudiana, commonly known as sweetleaf, sweet leaf, sugarleaf, or simply stevia, is widely grown for its sweet leaves. As a Sweetener and sugar substitute, stevias taste has a slower onset and longer duration than that of sugar, although some of its extracts may have a bitter or licorice-like aftertaste at high concentrations. Tests show that stevioside is roughly 300 times sweeter than sucrose. When used as a dietary supplement, very little is needed. Stevia Leaf Extract Benefits Improves taste and flavor of foods, as well as drinks. May help control blood sugar balance. May aid weight loss. Leaves no bitter aftertaste. An unusually sweet herb.