The method of making moon cakes with sago is as follows:

1. Rinse sago slightly, add a little water and soak it for half an hour. You don't need much water, just a little. Soak until the sago can be softened by hand. You can pour out the excess water.

2. The time for soaking sago can be used to steam purple potatoes. Washing purple potato, steaming, peeling, and rolling into purple potato paste.

3. Add appropriate amount of sugar and a little starch to sago, and stir thoroughly. Starch is added to make sago easy to form into dough.

4. Half a slice of cheese is stacked into small doses, and purple potato puree and sago puree are also made into small doses with uniform size.

5. Three kinds of fillings can be made: purple sweet potato and cheese heart, purple sweet potato and cheese heart. Hold the stuffing with sago. Simi is harder and easier to wrap.

6. Press out the shape with the mold.

7. Cover the plate containing moon cakes with another plate to block the water vapor. Steam in a pan for half an hour after the water boils.