Wash the rice and soak in a bowl of water with the tumeric powder and asam gelugor for at least 3 hours. Rinse the rice and place in steamer with the pandan leaves, asam gelugor and steam over boiling water for about 20 minutes.
Remove the rice from steamer and place in large bowl. Mix in the coconut milk, salt and sugar to taste. Mix well and return the rice back to steamer and steam until rice is fully cooked.