Firstly take a cooker add dal and all veg gourd, potato or any other u like add salt and boil it for 35 minutes

Now take a pan heat oil add mustard seed and onion and tomato fry it then add red chilli powder, sambhar Masala and then add boiling dal and veg

For dosa boil potato and peel it now take a pan add oil now onion and tomato fry it now add turmeric powder, salt and red chilli powder and boil potato

Now take dosa batter add water as reqried now take non stick tava heat it spread oil on tava

Spread dosa batter in round now cook both side

Put some potatoveg in it now fold it

Serve dosa with sambhar