The dried seeds of Ficus pumila are held in a thin pocket of pectin which can be dissolved in water to make a cooling jelly. Aiyu jelly is eaten as a popular cooling snack in Hong Kong, Singapore, Taiwan and parts of Malaysia. As far as I am aware although Ficus pumila is frequently grown in Borneo for landscaping projects it is not cultivated anywhere in Borneo for consumption. The dried seeds for making the jelly are imported from mainland China or Taiwan. In any case it is unlikely that Ficus pumila could produce seeds in Borneo because the pollinating wasp is absent.
Wikipedia: Aiyu_jelly