Peel, Wash and chop beans and potatoes. Grate ginger and make a puree of tomato by grating it.

Heat oil in a wok. Add cumin seeds and when cumin seeds splutter put grated ginger and tomato puree and saute for 1 minute. Add salt, red chilli powder and turmeric powder and saute for 1 minute.

Now add chopped potatoes and beans and mix well. Add little water and cover the lid. Cook for 10 minutes or till done on low flame. Add garam masala and coriander seeds powder and mix.