The dough has doubled in size. Punch the dough to eliminate the air bubbles. Then, knead it on the working surface for 6-8 minutes until smooth.
Roll the dough into a long even log. Divide the dough into 16 pieces. Cover them, so they don’t dry out.
Take one piece of dough. Flatten it first, then use a rolling pin to roll the edge back and forth. The left hand rotates the dough. Repeat that, and you will get a round wrapper with a thick middle and a thinner edge.
Put some filling in the middle. Pinch the corner to create the first pleat. Use your left hand to help to stretch, fold, and pinch the wrapper all the way around the edge until the bun is closed.
Put parchment paper under. Rotate the bun and shape it a little bit taller so it doesn’t become too flat.
Once you finish wrapping all the buns, put them in the steamer and let them raise for another 20 minutes or until they are 1.5 times the size.
Steam the buns over medium heat for 20 minutes (start counting the time after the water has came to a boil).
Turn off the heat. Do not open the lid immediately. Instead, let the buns sit in the steamer for 10 minutes to avoid shrinking. Enjoy!