Steamed Bao Buns

0 Combine yeast, sugar and milk in a bowl and whisk to mix well. Set aside for 5 to 10 minutes to activate the yeast. 
4 In a large bowl, combine flour, baking powder and salt. Whisk together until combined. 
3 Once the yeast has bloomed, pour the yeast mixture into the bowl with the flour. Using your hands or a spoon, mix until a rough ball of dough forms.
2 Lightly dust cutting board or work surface with flour. Knead the dough for about 3 minutes. Cover the dough with a damp kitchen towel or saran wrap and let it to rest for 10-12 minutes. 
1 Knead the dough for 1 to 2 minutes and form into a ball. Transfer the dough into a lightly oiled bowl and cover with a kitchen towel or saran wrap. Set aside and let the dough rise for at least 1 hour in room temperature. 
5 While the dough is resting, prepare 10 (3x3) pieces of parchment paper for steaming. 
6 After the dough has risen and doubled in size, punch the air out and cut into 10 pieces. Each piece should weigh approximately 45-50 grams. Cover with a damp kitchen towel or saran wrap to prevent them from drying out.
7 Lightly flour cutting board or work surface and form the dough into a round ball. Using the palm of your hands, press down to flatten the dough. Roll the dough out into a long oval shape, approximately 4 inches by 2 1/2 inches and 1/4 inch thick. 
8 Gently brush oil on one side of the dough. Then fold the dough in half length-wise. Place the dough on top of a parchment paper. Repeat for the remaining dough
9 Transfer the dough onto a sheet tray and cover with saran wrap or kitchen towel. Allow the dough to rise for 15-20 minutes.
10 Once the dough has risen, assemble onto a steam basket. Set the steam basket over a pan with boiling water, cover, and steam for 10 minutes. After 10 minutes, turn the heat off and let it sit for 5 minutes making sure to keep the lid on. 
11 Serve while hot and enjoy!