Combine flour, yeast, sugar, baking powder, salt in a bowl.
Add oil and mix well.
Add water gradually and knead into a soft yet a bit stiff dough. You can use your stand mixer and knead for 2-3 minutes or knead for 5 minutes by hand.
Let the dough proof for 45-60 minutes.
Once the dough has has doubled in volume punch slightly and knead for a minute.
Roll the dough into large circle of 1/5″ thickness.
Using a 4″ cutter, cut out small circles.
Fold each circle into half as shown.
Arrange in a steamer plate and steam for 5-6 minutes.
Once they are well steamed they puff up, looks a a bit glossy and dry to touch.
Fill in with your favorite veggie or tofu preparation and serve warm.