Bao Buns

Bahan-bahan (18 porsi)

• ½ cup water, (warm)
• ½ cup milk, (warm)
• 3 tablespoons sugar
• 1 packet active dry yeast, (2 ¼ teaspoons)
• 2 tablespoons vegetable oil, (more for brushing)
• 2 ½ cups all-purpose flour
• 1 teaspoon baking powder
• ½ teaspoon salt