Chinese Pork Buns (Cha Siu Bao)

Ingredients

• ✓ 6 cups all-purpose flour
• ✓ ¼ cup white sugar
• ✓ 1 ¾ cups warm water (110 degrees F/45 degrees C)
• ✓ 1 tablespoon active dry yeast
• ✓ 1 tablespoon baking powder
• ✓ 2 tablespoons shortening
• ✓ 1 pound finely chopped pork
• ✓ 1 ½ tablespoons light soy sauce
• ✓ 1 ½ tablespoons hoisin sauce
• ✓ 1 teaspoon soy sauce
• ✓ 1 ½ tablespoons white sugar
• ✓ 1 ½ tablespoons soy sauce
• ✓ 1 ½ tablespoons oyster sauce
• ✓ 1 cup water
• ✓ 2 tablespoons cornstarch
• ✓ 2 ½ tablespoons water
• ✓ 2 tablespoons shortening
• ✓ 1 ½ teaspoons sesame oil
• ✓ ¼ teaspoon ground white pepper