1. Cut sweet potatoes into pieces.
2. Put it in the pot and add an appropriate amount of water.
3. Add rock sugar.
4. Add a few red dates.
5. Store the pressure cooker for eight minutes.
6. Colorful glutinous rice balls (previously made and frozen).
7. Cook the small glutinous rice balls.
8. Add the cooked glutinous rice balls to the sweet potato soup.
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