Cook the Sago: Begin by boiling a pot of water using a ratio of more than 10:1 to sago. Once the water is bubbling, add the sago pearls while stirring occasionally. Cover and let it simmer for 20 minutes. You'll know it's ready when small white dots appear; then, turn off the heat, cover, and let it sit for another 20 minutes. Finally, rinse the cooked sago in cold water to stop the cooking process.

Boil the Tang Yuan: In a separate pot, bring water to a rolling boil. Gently add the glutinous rice balls to the pot, stirring to prevent them from sticking. Cook the tang yuan until they float to the surface, which takes about 2-3 minutes. Once cooked, transfer them to a bowl of cold water to cool down and firm up, ensuring they maintain their chewy texture.

Prepare the Mango: While the sago and tang yuan cool, take one ripe mango and dice it into small pieces. For a smoother texture in your mango smoothie, mash half of the diced mango with a fork, or blend it with coconut milk until smooth. This creamy mango mixture will add a luscious layer to your Mango Glutinous Rice Balls dessert.

Assemble the Dish: In a large serving bowl, combine the cooked sago, diced mango, and your chilled tang yuan. Pour in the creamy coconut milk and the blended mango puree, stirring everything together gently. To enhance the flavors, chill the mixture in the refrigerator for a few hours, allowing the ingredients to meld beautifully, making each bite of your mango glutinous rice balls even more delightful.