Wash arhar dal/toor dal thoroughly in running water.

Add arhar dal and chopped raw mangoes in a pressure cooker, along with turmeric powder and salt.

Pressure cook on high heat for 3-4 whistles and turn off the heat.

Let the pressure cooker cool down on its own.

Mash the cooked toor dal thoroughly with a masher or the backside of a ladle.

Heat oil in a heavy bottomed pan for tempering.

Add dry red chillies and crushed garlic pods and saute until golden brown and the raw aroma of the garlic goes away.

Immediately add curry leaves and stir till sizzling stops.

Add the chopped onions and saute until golden brown, or caramelized.

Add the tomatoes and cook until soft and mushy.

Add mashed dal contents from the pressure cooker and stir to combine.

Cook on low heat for about 2 minutes and switch off heat.

Serve hot with rice and other Andhra dishes.