Wash bottle gourd and peel the skin off using a peeler, then cut vertically in to half. Scoop out the seeds and chop bottle gourd kernel in to big chunks.
Add all the bottle gourd pieces in to a pan along with 1/2 cup of water. Cook it in medium flame till the pieces are soft.
Meanwhile heat a skillet or wok adding oil, urad dal, chana dal and red chillies. Fry them together till the lentils turn little brown.
Transfer all the roasted ingredients in to a mixer jar along with grated coconut, salt, asafoetida, coriander leaves and cooked bottle gourd pieces. Grind them together to a semi course paste.
Bottle gourd chutney is ready. You can relish it with steamed rice, idli and dosa.