A pineapple is a sweet tropical fruit with a tough leathery skin and spiky leaves on top. Pineapple is excellent, whether eaten as a snack, in a sweet dessert, in savory dishes like fried rice, or even on pizza.Pineapple is the only edible fruit of its kind, the Bromeliads. One pineapple plant can produce one pineapple at a time. Pineapples ripen faster upside down.