We love using low sugar fruits in our green smoothies to help prevent smoothie a day is one of the simplest ways to maintain a healthy diet. When we make these recipes we usually follow the 60/40 rule: 3 cups fruit and 2. We've scoured our hundreds of recipes to find a few that have 10 grams or less of sugar, which means no matter what your dietary requirements, you can enjoy. Feature Image-low sugar fruits by green blender This small, sour citrus fruit packs a punch in terms of flavor and health benefits. 2g of fiber, it's the perfect fruit to add tart sweetness to smoothies, liven up water, and squeeze on tacos. less than one gram of sugar, one gram of fiber, and only 10 calories, making them.