The recipe that I got off the internet says that it makes 32 buns (I think it really makes 16). I halved this recipe and made 8 buns.
Here's the recipe in full for 16 buns:
1 tablespoon yeast
1 tablespoon sugar
1 1/2 cups warm water
4 cups all-purpose flour
In a small bowl, sprinkle yeast and sugar over 4 tablespoons of the warm water and leave it for 15 minutes. Place the flour in a bowl and make a well in the center. Pour in the yeast mixture and the remaining water. Mix everything to a dough. Turn it onto a floured board and knead until smooth.
Return dough to the bowl, cover and let it stand in a warm place for about an hour or until doubled in size. Punch down, cover again and let it stand for 20 minutes longer.
Knead the dough again and shape into rolls (I found that using a bit of flour helps the shaping). Bring the water in the bottom of a steamer to a boil. Place the rolls in the steamer, leaving a 1- inch gap between them. Cook for 10 minutes, or until firm and cooked through. Serve them hot.
Voila! Homemade mantou buns. Check out the steam rising off those puppies! (I couldn't fit all the buns on one plate so had to make the remaining two on the second round.)