Put the coconut milk in a saucepan. Half fill the empty can with glutinous rice and add this to the pot as well. Remove any stuck residues with a little water and pour into the pot. Add sugar and salt, stir and bring to the boil.
In the meantime, peel the mango and cut into bite-sized cubes. Add to the rice, mix and let the rice soak over a very low flame for 20-30 minutes. Stir again and again, the rice sticks slightly. Add a little water if necessary.
Roast the desiccated coconut dry in a pan and sprinkle over the rice just before serving. Tastes warm and cold.