Add tur dal, turmeric, salt and 2 1/2 cups water to a pressure cooker
Heat ghee and oil in a kadhai and add jeera. Once it starts spluttering, add whole red chillies, garlic, ginger, chillies and green chillies
Add onions, tomatoes, turmeric powder, 1 teaspoon chilli powder, coriander powder and salt and cook till the onion is brown and the tomatoes are tender
Reserve half this tadka in a smaller pan and set aside
Add cooked dal to the remaining tadka in the kadhai along with 3/4-1 cup water
Bring this to a quick boil and then simmer
Smoke the dal by placing a katori or small vessel in the middle of the dal. Add a hot piece of coal and pour a little oil or ghee on top
Heat the reserved tadka and add chilli powder
Pour the tadka over the dal. Top with coriander and serve hot