Polished glutinous rice is soaked in water for 4 to 6 hours. The water is decanted and sugar, salt, and coconut milk are added to the rice; the mixture is then boiled. Split mungbean seed, which has been soaked in water for about 12 hours, steamed for 30 to 40 minutes, and subsequently 208 Schiller et al crushed in a mortar, is added to the cooked rice mixture. This is then wrapped in banana leaves and steam-cooked or boiled for 20 to 30 minutes.