1. 110 grams of mashed sweet potatoes with a small packet of milk powder (25 grams), 20 grams of white sugar, and 200 grams of corn flour.
2. Add 30 grams of boiling water and knead the dough.
3. Divide equally into 14 small doughs and round them.
4. Rub a hole in the bottom with your finger, and slowly wipe the flat ball with the other hand, wipe the tip. Put it in the steamer.
5. Make two cages.
6. Steam on high heat for 20 minutes, stuffing for 5 minutes.
