In a wok add 2-3 tbsp oil heat well.add cumin seeds, black pepper corns, saute few seconds add chopped onion saute untill it turns brown add ginger garlic paste and saute one minute.then add little water turn the flame medium cooked 2-3 minutes when the onion cooked well.open the lid add tomatoes, green chillies and all spices.mix well add salt and 1/4 cup water.cover and cooked untill tomatoes become soft and mushy. cooked the masala untill the oil released.then add boil chickpeas with water.