For the pastry Sieve the flour, salt and baking powder. Now add oil. Form a breadcrumb like consistency Now knead the dough. Cover with cloth and keep aside. The pea stuffing Boil the peas. Once the peas are done, mash them. In a pan add some oil. Once oil is heated add cumin and fry. Once they splutter and the crushed ginger and green chilli. Fry for a minute. Add the dry spice powders. and salt. Stir well. Now, add the gram fliur and saute for about 2 or 3 minutes. preparing the kachoris using the dough make equal sized balls about 5-6. Now roll them into a 3 or 4 inched round. Add the stuffing to the center of the rolled dough. Brush some water on the edges. Bring together the edges and pinch them together. Prepare all matar kachoris the same way. keep the kachoris covered with a wet cloth. now heat oil. at medium flame, fry the kachoris till they become golden, flaky and crisp. serve matar kachori hot with some coriander chutney or tamarind chutney.