what is duku in english?
Lansium parasiticum, commonly known as langsat (/ˈlɑːŋsɑːt/) or lanzones (/lɑːˈnzɔːnɛs/) in English; duku in Indonesian or dokong in Malay, is a species of tree in the Mahogany family with commercially cultivated edible fruits. The species is native to Southeast Asia.