Char Siu Bao (Steamed Barbecue Pork Buns)

INGREDIENTS

3 1/2 cups

Hongkong flour (/ bao flour or all-purpose flour (450g))

1/4 cup

powdered sugar (/ icing sugar (35g))

1/2 tsp

salt

1 1/4 cups

warm water ((about 110°F / 43°C) (300ml))

2 tsp

active dry yeast

3 tbsp

vegetable oil

2 tsp

baking powder

2 tbsp

vegetable oil

medium onion ((finely diced))

2 cloves

garlic ((minced))

1 lb

char siu ((diced) (450g))

1/3 cup

char siu glaze ((80ml))

1 tsp

corn starch (+ 2 tbsp water)

green onions ((thinly sliced))