Erythritol has a few distinct and important characteristics that set it apart — and make it a cut above — other sweeteners. First of all, like other sugar alcohols, erythritol is sugar free. It’s also naturally derived, unlike artificial sweeteners such as aspartame and saccharin. But erythritol is the only sugar alcohol that is fermented rather than produced by catalytic hydrogenation (treated with hydrogen). As a result, erythritol has unique features and function that make it stand out among the others.