Rinse tuvar dal and chana dal. Place dals or lentils in two separate bowls. Cover with water. Soak for 1 hour. Drain.
Place dals (lentils), ginger, green chili, ground turmeric and water in a pressure cooker. Cover with lid. Cook until mushy or 6-8 whistles. Set aside.
LENTIL CURRY:
Heat ghee in a large frying pan over medium-high heat. Add cumin seeds, cloves and cinnamon stick. When cumin seeds crackle, add chopped onions. Sauté for 2-3 minutes or until browned. Add ground turmeric and red chili powder. Sauté for 1 minute or until aromatic.
Add tomatoes and green chilies. Sauté 2-3 minutes or until mushy. Add cooked dal. Stir in coriander (cilantro) leaves. Season with salt. If the curry is too thick, add more water. Bring to a boil. Reduce heat and simmer for 10 minutes.
TEMPERED SPICES (TADKA):
Heat ghee in a frying pan over medium heat. Add red chili and garlic. Sauté for a few seconds. Add a pinch of asafetida. Sauté for few seconds. Add tempered spices to curry. Stir to combine.