Here is the recipe for the dumplings I made way back for steamed coconut salmon. I don't use baking powder because I like my dumplings stiff and chewy, with a nice bite to it.
Serve with stewed or curried chicken or fish.
In a large bowl combine cornmeal, flour, salt and sugar.
Gradually add water and knead to form a soft dough.
In a large saucepan, bring 8 cups of water to boil(maybe a little less if it is a narrow saucepan). Add salt.
Pinch of pieces of dough and shape like the pic above, rolling between the palms of your hands making the middle thicker than the ends, and then flattening. (Use a dusting of flour, if required, to keep it from sticking to your hands)
Drop gently into boiling water and boil for 10 minutes or until fully cooked.