Betel nut, the Papuan's favorite chewing gum! The formula is simple: place the betel nut in the mouth and start chewing it. When it starts to get juicy, grab a sort of twig, dip it in a white powder (made from nacre) and chew. The whole thing quickly becomes red and juicy, so spitting it regularily is necessary. 2 bettel nuts will cost IDR 5000.