Jackfruit sweet large Tropical fruit. Jackfruit is the world’s largest tropical fruit weighing up to 50 pounds. It resembles a giant watermelon, but with a prickly skin. As it ripens, it turns from green to brownish and softens up. It’s quite sticky inside, so it helps to put a little vegetable oil on your hands … Continue reading 6 Exceptional Health Benefits of Jackfruit.