These are good! The dough was easy to work with. I used slightly less than 5 cups of bread flour. There don't seem to be any directions for the filling, but it seemed quite straightforward, and it was. I put the water, cornstarch, sugar and salt into a saucepan, mixed them together, then added the diced barbecued pork, and the small amount of sauce that came with it, and cooked this briefly over medium heat, while stirring, until it thickened. I then cooled the mixture a little, and wrapped the dough around it. I made somewhat smaller dumplings, weighing the dough into 28 45-gram (about 1 1/2 oz) pieces. The steaming was a little tricky. I suggest cooking a small batch first. After my first batch, things went well. I used a Chinese wood and bamboo steamer, so didn't need to use a cloth. Thank you very much for posting this recipe. I enjoyed making them.