1. Wash both Dals with cold water and place in a crock pot, add 4-6 glasses of water( the water should be about an inch abve the lentils), 1 1/2 teaspoon of salt, ground turmeric, cinnamon stick, ginger and garlic powder. Let it cook for 2-4 hours. (Untill the beans are soft.)
2. In a seperate pot heat the oil, add onions, garlic and ginger paste. Sautee till onions are carmelized,turn the heat low and add tomato puree. Also add all the remaining spices except Garam Masala.Also add 1/4 cup water. Let it sautee untill you see oill on the edges around the mixture (this should take about 5 to 8 minutes.). This means the spices have incorporated with the onion-tomato mixture.
3. Add this to the crock pot. Add water for desired contistancy. Cook another 1/2 hour.Add Garam Masala and mix.
Garnish with coriander