MONK FRUIT SWEETNER WITH ALLULOSE (KETO) WHATVITZ. Monk fruit with allulose is. a popular sugar substitute blend, combining intense sweetness from monk fruit extract with the bulk and sugar-like properties of allulose, creating a zero-calorie, zero-carb sweetener that bakes, browns, and dissolves better than monk fruit alone, making it ideal for keto diets, diabetics, and general sugar reduction without the digestive issues of sugar alcohols.