Rinse 1 cup masoor dal thoroughly until the water runs clear
Soak for 15 to 20 minutes if desired
Add the dal to a pot with 3 cups water
Add 1/2 teaspoon turmeric and salt to taste
Bring to a boil
Skim off any foam
Reduce heat and simmer for 15 to 20 minutes until soft
Stir occasionally and add more water if needed
Heat oil or ghee in a pan
Add cumin seeds, chopped onion, garlic, and ginger
Cook until golden
Add chopped tomato, red chili powder, and coriander powder
Cook until the masala softens
Pour the tempering into the cooked dal
Mix well and simmer for 2 to 3 minutes
Garnish with cilantro
Serve hot with rice or roti