Heat a nonstick pan with cooking oil, add mustard, cumin, coriander seeds and saute well.
Add the green chilies and combine them.
Next, add the ridge gourd peels and saute well.
Add the curry leaves and simmer till the peels are cooked.
Finally, add the curry leaves and coriander leaves.
Switch off the flame, add salt and soaked tamarind pieces.
Take it in a mixer and grind to a smooth paste adding little water.
Once done, transfer to a serving bowl.
Heat a pan with cooking oil, temper with all the ingredients listed.
Pour it over the chutney.