And left over khaman dokhla first cut into pieces. Heat oil in a pan add mustard seeds when crackle add onion and green chilli chopped saute for a minute add tomato puree or chopped when soft add salt red chilli powder and tomato ketchup mix 2 tbsp water and heat it add pieces of khaman dokhla stir carefully and sprinkle coriander leaves on it enjoy this tangy dokhla just like chilli idli.