4-1/2 (500 g) cups flour, sifted
4-1/2 teaspoon baking powder
7 oz (200 g) lean boneless pork, minced
4 tablespoons soy sauce
1/2 teaspoon fresh ginger, chopped
2 teaspoons scallions, chopped
7 teaspoon sesame oil
5 fl oz (140 ml) water for the filling
Mix the flour and baking powder with 9 fl oz (250 ml) of water. Knead until smooth and elastic, then cover with a warm wet cloth and let rise. Mix the pork with the soy sauce and ginger. Gradually add 5 oz (140 ml) of water, 1-1/2 ounces at a time, stirring after each addition until the pork becomes a thick paste. Mix in the scallions and sesame oil. Knead the dough for three minutes and roll into a long roll. Divide it into 30 portions and roll each into a flat circle about 3 inches (7 to 8 cm) in diameter. Divide fillings into 30 portions. Fill with about 1 portion of the pork mixture and seal. Place the dumplings in a steamer and steam for 7 minutes. Remove and serve.