Mix the refined flour, salt and baking powder and knead to a stiff dough, with water.
Heat oil and add the onion and garlic. Saute till a little soft and add the chicken.
Turn around over high heat till chicken is almost cooked.
Take it off the heat and mix in the soya sauce, salt, vinegar and black pepper.
Roll the dough thin (translucent) and cut into 4"-5" rounds.
Take a round, wet edges and place some filling in the center, bring edges together to cover the filling, twist to seal and fill the rest in the same way.
Steam for about 10 minutes and serve with soya sauce and chilli sauce.
Boil 8-10 dry red chilli along with two medium size tomatoes. When tender, transfer it to a blender, add ginger juliennes and two/three pods of garlic and blend. Add salt and lemon juice to the sauce before serving.