Mix all ingredients for bottom layer. Sieve. Pour batter into a 12" diameter round tin.
Liquidize 20 pieces pandan leaves with 600ml water (add more water to get total of 700ml pandan juice).
Pour pandan juice into a bowl. Add 3/4 tablespoon Iye water. Add mixture to batter. Stir well.
Prepare steamer. When water boils, place tin in steamer. Stir batter continuously for about 15-20minutes.
Steam for 30 minutes.