1. Prepare the required ingredients;
2. Put clean water in the pot, boil and pour the sago, until there is only a little white hard core in the middle of the sago;
3. Cover the pot and let the remaining temperature sit for about 15 minutes, until the sago has no white hard core and becomes transparent;
4. Then take the sago out of cold water and put it in ice water for later use;
5. Take out the mango and grapefruit flesh;
6. Put most of the mango pulp into the food processor, pour coconut milk and milk, and whipped into mango puree;
7. Finally, put grapefruit flesh, mango flesh and sago in the cup, pour in the milk that has not been sago, and then pour the beaten mango puree;
