Rinse 1 cup moong dal thoroughly
Soak the dal in water for 20 to 30 minutes
Drain the water
Add the dal to a pot with 3 to 4 cups water
Add salt to taste
Bring to a boil
Reduce heat and simmer until the dal is soft
Stir occasionally and add more water if needed
Heat oil or ghee in a pan
Add cumin seeds
Add chopped onion and sauté until golden
Add ginger, garlic, and green chili
Add chopped tomato and cook until soft
Add turmeric, red chili powder, and coriander powder
Pour the tempering into the cooked dal
Mix well
Garnish with chopped coriander leaves
Serve hot