Make the Dough (Bread Machine)

1. Add the warm milk, sugar, and yeast to the bread machine pan. Let sit for 5 minutes, until the yeast looks foamy.
2. Add the oil, flour, baking powder, and salt.
3. Set the machine to the Dough cycle and start.
4. Allow the machine to knead and complete the first rise. When finished, the dough should be smooth, soft, and slightly tacky but not sticky.

Shape the Bao

1. Turn the dough out onto a lightly floured surface.
2. Divide into equal portions (typically 8–10 pieces).
3. Roll each piece into a ball, then flatten into an oval.
4. Lightly brush one side with oil and fold in half to create the classic bao shape.
5. Place shaped buns on parchment paper, cover loosely, and let rest for 20–30 minutes.

Steam the Bao

1. Bring water to a gentle boil in a pot fitted with a steamer basket.
2. Place buns into the steamer, leaving space between each one to expand.
3. Cover and steam over medium heat for 8–10 minutes, until puffed and fluffy.
4. Turn off the heat and let buns rest inside the covered steamer for 2–3 minutes before removing.