Add rice to a bowl & wash it a few times. Pour 4 cups water & place it in a pressure cooker. Cover the bowl & pressure cook for 3 whistles. When the pressure goes off, remove the rice & spread it on a wide plate to cool completely.
Wash, peel and grate or chop the mango. You can also grate in a processor. Update: Lately I have started to make this with cooked mango. I just peel, cut and add them to a bowl. Cover and place it in the cooker over the rice bowl (PIP). Once cooked I mash it and use as mentioned below.
How to make mango rice
Heat a pan with half the oil. Fry peanuts until half roasted. Then dals until lightly golden. Next add mustard. When they begin to crackle, add ginger, green chilies, red chilies & curry leaves.
Fry till the curry leaves become crisp, then add hing. Transfer this aside to a bowl.
Add the rest of the oil and add grated mango, salt and turmeric. Saute for a minute. Cook covered until the mango turns mushy and completely soft.
Then add the seasoning back that we set aside and mix. Keep covered for 2 to 3 mins. Add this to the cooked rice. If needed add in little more oil and salt. Gently mix the mango rice.
To make karnataka style mavinakayi chitranna, add 1 cup grated coconut and handful of finely chopped coriander leaves. Mix well.