Bbq pork bun

wheat flour 52.0% , water 16.0% , sugar 9.5% , pork 10.0% , 500 3.3% , canola oil 2.4% , potato starch 1.9% , Wheaten Cornflour 1.5% , red onion 1.2% , shortening 1.0% , Oyster Sauce 0.8% , corn starch 0.7% , light soy sauce 0.6% , dark soy sauce 0.5% , Acidity regulator 0.5% , Raising agent 0.4% , chicken broth 0.4% , Preservative 0.3% , sesame oil 0.3% , sourdough starter 0.3% , ginger 0.2% , pepper 0.2% , salt 0.2% , Ground Bean Sauce 0.2% , honey 0.2% , Cooking Wine 0.2% , sesame paste 0.1% , 124 0.1% , Five Spice Powder 0.1%