Wash the rice by placing it in a mixing bowl and cover with cold water, then vigorously swish the rice with your hand to release loose starch. Pour off the cloudy water and repeat the process 4 more times or until the water runs mostly clear.

Soak the rice with room temp water for at least 4 hours and up to overnight.

Preheat the steamer by bringing it to a full boil over high heat.

Drain the rice very well, shaking off excess water in a sieve until there is no more dripping.

Line a steamer rack with moist muslin or a thin white tea towel and place the rice on the cloth. Fold the edges of the cloth over the rice.

Steam the rice for 20-25 minutes over rapidly boiling water, until the rice is fully cooked through.

While the rice is cooking, make the coconut syrup by combining the coconut milk, sugar, and salt in a small pot. Cook it over medium heat, and as soon as it starts to bubble, turn off the heat and cover.

Few minutes before the rice is done, reheat the syrup so it is steaming hot then keep covered.

When the rice is done, immediately place the rice into a mixing bowl and pour the syrup over the rice. Stir to break up any lumps, then cover and let sit for 20 minutes.

After 20 minutes, use a rubber spatula to fold the bottom part of the rice up to the top to help redistribute the syrup, and let sit for at least another 20 minutes.

Stir the rice flour into the water until there are no more lumps.

Combine the rice flour slurry, coconut milk, and salt in a small pot. Cook over medium high heat, stirring constantly, until the mixture comes to a boil. Remove from heat and pour into a bowl. Let cool completely before serving.

Rinse the beans in cold water and add them to a small pot and cover with about 2 cups of water. Over medium heat, bring the water to a simmer. Once simmering, immediately remove from the heat and cover the pot for 10 minutes.

Drain off the cooking water and rinse the beans in cold water. Lay the beans on a paper towel to dry.

In a lightly greased sauté pan, toast the beans over medium high heat, stirring frequently until the beans are dry, crunchy and start developing a light golden colour.

Serve the rice beside sweet, fresh cut mangoes. Spoon some salted coconut sauce over the rice and sprinkle with the crispy mung beans.