Siopao (Filipino Steamed Buns)

Details

Ingredients

• 3 ⅓ cups all-purpose flour
• ½ cup white sugar
• ½ teaspoon salt
• 1 (.25 ounce) package active dry yeast
• 1 cup lukewarm water
• ¼ cup vegetable oil
• 1 teaspoon vegetable oil, or as needed