Add cumin seeds and cook for a few seconds till they splutter.
Add tomatoes, salt, turmeric & chili pepper after the cumin seeds have popped and you can smell the aroma. Cook tomatoes for 5 – 10 minutes while mashing with a wooden spoon.
Add potatoes and fry for 2-3 minutes. Add peas with 1 cup water. If you prefer a dryer sabzi then add only ¼th cup of water.
Cook till potatoes are tender and desired level of gravy is reached. Garnish with green chili and coriander.