* First, put sago in a bowl for later use. Note that the sago purchased is wet rice flour and needs to be dried in advance. It can be dried in a microwave oven or in a ventilated place.
* Next, peel the purple potato, cut it and wash it again to remove the starch on the surface. Put the purple potato in the pot for later use.
* Put a proper amount of water in the pot and put it into the steamer. Put the purple potato in a pot and steam it with cold water. Steam for about 20 minutes.
* Prepare a steamer and put half a pot of water in it. Put sago in a pot with cold water and boil it. Cook until the sago is crystal clear with a little white core inside. Then cover the pot and simmer for about 8 minutes.
* After 8 minutes, open the lid, and the sago should be completely crystal clear. Take it out and cool it in cold water. After cooling for about three times, plate the sago for later use.
* Take out the purple potato after steaming. Press the purple potato into purple potato paste while it is hot.
* Add a proper amount of condensed milk to the purple potato paste, and more will make it sweeter. Add condensed milk and stir evenly with a spoon to make the purple potato puree more delicate.
* Prepare a large bowl, put a spoonful of purple potato paste at the bottom of the bowl and spread it flat at the bottom of the bowl.
* Then put the previously cooked sago dew into a bowl and mix it with the purple potato paste evenly.
* Finally, add the right amount of milk, and you can choose the amount according to your personal taste.
In this way, a delicious and healthy milky purple sweet potato sago is ready. The purple potato in this dessert is rich in nutrition, the sago dew is rich in starch, and the milk is rich in protein and calcium. The reasonable combination of these ingredients makes this dessert delicious and low in calories, which is very suitable for eating during fat reduction.