Choose one piece and utilize a rolling pin to roll it out into a 4 inch diameter circle. If always, sprinkle flour about the surface area to forestall sticking. baking ammonia: also called ammonium carbonate, baker's ammonia, or "hartshorn," is employed as an additional leavening agent, which helps to generate https://cesaryzywu.webbuzzfeed.com/33028024/facts-about-steamed-buns-with-roast-pork-filling-revealed