Heat oil in a pan and fry the diced bittergourd till light golden brown. Drain the oil and set the bitergourd aside.
In the same oil splutter mustard and add green chilly, curry leaves, dried chilies, ginger/garlic paste and sauté till they turn golden brown.
Pour the bittergourd and sauteed ingredients into the curd. Give it a good stir. Season with a little salt if needed and it's ready to be served!