Rinse the kalo simiko daal thoroughly under cold running water and soak it for about 20 minutes.
Chop the onion and tomatoes separately and set aside.
Heat cooking oil in a pot over medium heat. Add chopped onions and sauté until they become translucent.
Add ginger/garlic paste to the onions and sauté for another 2 minutes until the raw smell disappears.
Add turmeric, cumin/corrainder powder, garam masala powder, red chilli powder, and meethi. Sauté for a minute to release the aromas.
Add the chopped tomatoes to the mixture and cook until they become soft and the oil starts to separate from the masala.
Add the soaked and drained kalo simiko daal into the pot. Mix well with the masala.
Add salt to taste and enough water to cover the daal. Bring it to a boil and then simmer on low heat until the lentils are fully cooked and tender, about 25-30 minutes.