usually in Nanggroe Aceh Darussalam in the rumbia is used in the sweet rujak, the fruit of rumbia in Nanggroe Aceh Darussalam is scarce, shemale in nanggroe Aceh Darussalam already a rare in rujak-salad was already rarely in, this is the shape of grapefruit. 
the fruit of rumbia has incredible properties, one of which can heal the stomach and prevent the stomach, and can be used for medicinal diarrhea from grapefruit.