jackfruit Artocarpus china fruit Hainan jungle nobbly Prickly tropical Artocarpus heterophyllus Fanas farm green Jack fruit large mulberry family Panasa produce spiny tree vegetable appearance artocarpus-heterophyllus Asian availability available buy buying cambodia cambodian carry carrying colors colours creamy display distinctive edible flavor flavors flavour flavoures flesh food for-sale heavy largest-tree-fruit local market market-stalls merchandise merchants purchasable quantity rough spikes spiky surface texture textures white yellow