Mix and wash dals well. Pressure cook for 3 whistles, till soft but not overcooked.
Once the pressure falls down, remove the lid and mash the dal when it is still hot and add enough water.
Heat ghee/butter in a deep non stick pan.
Add cumin seeds, then add onion, ginger and green chilies. Stir fry till soft and nicely browned
Now red chilies and salt, mix well. Add the cooked dal, mix everything together well.
Bring to a boil. Simmer for 3-4 minutes.
Garnish with chopped coriander and lemon juice.
Serve hot with rice, rotis, etc.