Burro bananas resemble the cavendish variety but are shorter and more square in shape. They have dark green peels that deepen to deep yellow with black spots when fully ripe. Their creamy white or yellow flesh has a lemony banana flavor when ripe and is slightly firmer toward the center.
 
Shelf Life: about 5 to 7 days should you refrigerate raw bananas? Yes: Store bananas at room temperature until they are fully ripe, then refrigerate to extend shelf life. How long do bananas last in the refrigerator? Fully ripe bananas will last for about 5 to 7 days in the fridge.