Kimchi Pork Buns

I have made these twice now with two different dough recipes, both of which can be left to rise overnight, if needed. Typically, dough for steamed bao is ready in about 2 hours, from mix to proof to prepare and steam. At some point I'll write a kitchen note about the many different ways you can make the dough for steamed buns and what the differences, if any, there are.
TheFoodeningBlog - Kimchi Pork Buns
Dough (from Maangchi)

1 c warm water + 2 tsp active dry yeast + 1/2 tsp salt + 1 tsp sugar
2 tbsp olive oil
3 c unbleached all purpose flour

For this dough, dissolve the dry yeast in warm water with or without the sugar and let it bubble into action for 10 mins before stirring in the rest of the ingredients. You should sift the flour and salt together before adding the yeast because direct contact with salt will kill the newly awakened yeast, or so I've read.

Let the dough rise in a warm spot in the kitchen, covered, until double in volume. Then gently knead and roll into a log and divide into 16 equal portions; or 8 portions to make really large buns.

Makes: 16 buns

Filling Ingredients

1/2 c homemade kimchi, finely chopped
2 tbsp soy sauce
1 tbsp sesame oil
1 tbsp homemade vegan oyster sauce (optional)

Mix filling ingredients together. Use 1 heaping tablespoon of filling per bun.

Roll dough portions out into a 4" diameter circle. Put the filling in the center, and bring the edges of the dough circle to the center and pinch at the top. You can pleat the folds at the top if you want to; but it all tastes the same.