Steam rice in bamboo steamer. Soak rice for 3 -24 hours, and then drain. Place on lined basket. Steam covered over boiling water for about 20 minutes. (If in a hurry, soak an hour, microwave for 2 minutes and then leave to stand again.) Sauce 1: Boil 1 ½ c coconut milk, 1/2 c sugar and ½ t salt. Stir this into the cooked rice and allow to cool. If there is leftover of this, add to Sauce 2. Sauce 2: Boil ½ c coconut, 1 T sugar, ¼ t salt, and corn starch. Pour over cooled cooked rice and mango to serve.