Soak lentils/dal in 3 cups of water for 4-6 hours.
Pressure cook the dal with chopped tomatoes,salt and turmeric.Keep it aside.
In a pan, heat oil, add cumin seeds and dried chillies and let it splutter.
Add ginger,garlic,chilli and onions. Let it cook until onions are golden brown.
Mash the dal and add onions mixture to the dal.
Let it come to a boil,garnish with chopped coriander leaves
Serve hot with jeera rice/pulao.