Soak toor dal for half an hour.
Pressure cook dal with salt, turmeric and sufficient water(2 cups)
Once the dal is done, let it cool.Churn it with a hand blender.
Add 2-3 cups of water with dal paste in a pot and let it boil.
Add tomato puree,fenugreek seeds,red chilli powder ,let it come to boil.
Add hard vegetables and cook for 10 mins.
Add soft vegetables and cook until soft.
Heat oil in a pan,add cumin and mustard seeds.
When the seeds crackle,add ginger,chillies,curry leaves,hing,saute for 10 seconds.
Add this tempering to the cooked dal.
Let it simmer on medium flame for few mins.
Serve hot with basmati rice,sweet boondi and arbi tuk / aloo tuk.