Wash and soak them for 20 mins. Drain the water and add the dal in a deep pan along with 4cups of water, salt, green chilly ginger chopped and turmeric
Boil the dal till dal is tender and gets mashy. remove and keep aside.
For the tadka heat a pan and add ghee. Add jeera and saute till crackel.
Add green chilli, garlic and ginger and saute for a minute.
Add chopped onion cook till translucent or golden brown now add tomatoes and cook till soft.
Add red chilli powder and salt to taste.
Add cooked Dal and some water if the dai is thick.