I made these buns myself. ha…quite successful.
Dough:
* 2 cups of flour * 3/4 cup of water (80°F) * 1 tsp of yeast * 1/2 tsp of saltFilling:
* 1 egg * 3 cups of chopped leeks * 3 cups of ground pork * 1/2 cup of soy sauce * 3 tbsp of sesame oil * 1 tsp white pepper