Rinse the sago pearls under cold water.
Boil 2 cups of water in a pot.
Add the rinsed sago pearls to the boiling water.
Cook for 10-15 minutes until translucent, stirring occasionally.
Drain and rinse the sago pearls under cold water.
Combine coconut milk and sugar in a separate pot over low heat until dissolved.
Add the cooked sago pearls to the coconut mixture and stir well.
Let the mixture cool to room temperature.
Serve in bowls topped with diced mango and mint leaves.