Wash and peel the bottle gourd and cut it into chunks. Set it aside till needed.
Slice the onions, green chilli, bull horn pepper and set it aside.
Peel and crush the garlic pods, mince them fine. mince the ginger as well. Keep it aside till needed.
Into a deep pot or kadai add the oil and cumin seeds.
Add the garlic, ginger, onions, green chilli and bull horn pepper and saute till they are aromatic.
Add the salt, turmeric powder, red chilli powder, goda masala and mix well.
Add the bottlegourd chunks and mix well.
Add the water.
Cover and cook for 7to 10 minutes.
Once the bottle gourd looks glassy, add the asafoetida and coriander leaves.
Mix well and cover and cook for another 2-3 minutes.
Remove from heat and serve the curry hot with rotis or rice.