This refreshing smoothie recipe will satisfy your summer thirst. Drink it or eat it with a spoon like a cool minty frozen sorbet. Pears are an excellent source of fiber, especially the skin. The skin also contains flavonols and flavon-3-ols, antioxidants that may help prevent diabetes. If you use red-skinned pears, you are also getting a good dose of anthocyanins, a blue pigment that also may help keep blood sugar balanced. For smoothie recipes, it usually works best to remove the core, but there is also nutrition in the seeds and, with a high power blender, you can throw in the entire fruit.