Wash and peel potatoes and chop into medium size pieces.
Wash drumsticks and peel from one side and chop to make 1 inch pieces and keep aside.
Roughly chop the tomatoes and grind with green chilies and ginger to make a smooth puree.
Heat mustard oil or any oil of your choice in the pressure cooker and add 1 tsp cumin in the medium hot oil.
let the cumin start crackling then add asafoetida , curry leaves and the prepared tomato puree and let it cook on medium heat and keep stirring.
Now add the coriander powder, kashmiri chili powder, red chili powder ,turmeric ,kasoori methi and salt and keep stirring and cooking till it become thick and start releasing oil from the sides.
Now add the roasted gram flour and mix well. (it is added to make the curry thick and smooth in texture )
Add the chopped potatoes and drumsticks and stir to mix ,stir fry for a minutes.
Now add the peas and mix well.
Add 2 cups of water (or as much thick or thin you want to make the curry, add water according to that)
Can add few slit green chilies (optional)
Close the cooker and pressure cook on medium heat for 2 whistles and wait till the cooker cool downs completely.
Open the cooker and check if the potatoes are done or not. if needed cook for one more whistle.
Don't over cook else the drumstick will become too soft and ruin the look and texture of the curry.
Now remove the lid of the cooker and let it boil for 2 minutes on medium heat.
Add garma masala and some fresh coriander and your drumstick aloo curry is ready to serve.
Enjoy with pulao, steamed rice, roti or parathas.