Fry the ridge gourd in a pan till it's golden brown and keep aside

Grind the red chillies, mustard seeds and cumin seeds into a fine paste. This is called besara in oriya

Heat some oil in a pan and add the panchphodan into it. Once it crackles add the onions and tomatoes and fry till it's soft and mushy

Add the green chillies, turmeric powder, salt and mix well. Add the diced potatoes and let it cook for few minutes

Once the potatoes are cooked add the besara masala and mix well. Add the fried ridge gourd into this and mix well

Serve this with hot rice