In a preheated pan, add vegetable oil or mustard oil and saute cumin seeds with green chilies for few seconds.
Now add chopped onions and saute to a minute on medium heat.
Season with salt, red chili powder, turmeric powder and chaat masala.
Add hot boiled potatoes and mashed accordingly.
Stir and cook for a minutes on medium heat to mix up all ingredients.
Add freshly chopped green coridner and mix well.
Now the delicious aloo bharta is ready to serve.