While waiting for the pandanus base to steam, mix together 200 ml coconut milk and 50 ml water with the starches and flour in another bowl. Mix well and sieve.
Bring the remaining 150 ml water to boil with the salt in the saucepan in low heat, followed by adding in the coconut mixture in step 1.
Keep stirring until the mixture thickens and turn off the heat. Once the pandanus base of mixture A is ready, pour the thicken coconut batter onto the set pandanus kuih layer and steam for another 15 minutes. Wipe the cover of the steamer regularly to prevent condesed steam from failling onto the kuih.
Set aside and cool down to room temperature (about two hours). Once cooled, cut into diamond shapes and serve.