Wash and drain glutinous rice. Place in a bowl or pan together with ground turmeric and asam gelugor or lime juice. Add enough water to cover the glutinous rice and allow it to soak at least 4 hours.
Prepare a steamer with 2 inches of water at the bottom. Bring water to a boil.
Drain glutinous rice and place it in steaming container. Add salt, peppercorns, and pandan leaves.
Pour in ½ cup (120ml) coconut milk, reserving the remaining ¼ cup (60ml) for later.
Transfer to prepared steamer. Cover and steam over medium heat for 20 minutes.
Remove lid and fluff glutinous rice with fork. Sprinkle the remaining ¼ cup (60ml) coconut milk onto rice. Cover and steam for another 10 minutes.