Monk fruit sweetener is a combination of sugar alcohol and monk fruit extract. It is the latest in calorie-free, carb-free sweeteners and the first I can tolerate. In fact, it really has no after taste which is amazing. It is the only sweetener I have ever been able to use and is a game-changer. I used to avoid artificial sweeteners because of their typical horrible after taste. I find that monk fruit sweetener, especially when combined with natural sugars, have zero after taste. This sweetener is perfect for those following a keto, low carb, or sugar-free diet.