Take a pressure cooker pan. Add oil. Once oil is hot, add mustard, dried red chilli and green chillies. Add curry leaves and shallot onion. Saute for some time. Add chopped tomatoes.

Soak the rice at least for half an hour. Meanwhile, add masalas and continue to cook for some time.

Add salt and continue to saute until it becomes mushy. Add water and rice. Don't add too much water. Close the lid and give 2-3 whistles. Open the lid and serve hot. As it is already tangy in taste, I do not serve with curd.