Bananas are elongated cylindrical fruits, often with flat sides, 6 to 12 inches long. They are green when unripe, yellow or red when ripe, and brown or black when overripe or after being stored in the refrigerator.
They have a starchy dry mouthfeel when unripe, and are sweet and creamy when ripe. When overripe, they have a mushy texture and a mildly tangy fermented taste.