Drain the soaked glutinous rice and place it in a steamer lined with cheesecloth. Steam for about 25-30 minutes until tender.

In a saucepan, combine coconut milk, sugar, and salt. Heat over medium heat until the sugar dissolves. Do not boil.

Once the rice is cooked, transfer it to a mixing bowl and pour half of the coconut sauce over it. Stir to combine.

To serve, place a portion of sticky rice on a plate, top with sliced mango, and drizzle with the remaining coconut sauce.