With less than 300 calories, this mocktail is guilt-free. Compared to other margarita recipes, this refreshing Cinco de Mayo treat has about 700 fewer calories for the same amount. You see, the ingredients in those recipes include calorie-dense alcohol, and added sugar. This version is made with whole plant foods, so it has fewer calories, more fiber, and micronutrients, like vitamins C, K, and certain B-vitamins.