Shrimp - To the d-veined and peeled raw shrimp, add 3/4 tsp salt and 1/2 tsp turmeric powder,mix well and leave it for 5 minutes.Then Fry the prawns in a little oil till it gets the red color and half cooked.
To the same pan, add 1 tbs oil and heat for about 30 seconds. Add the Onion seeds.
Allow the spices to crackle for a few seconds add onion cook till golden brown, now quickly add the Ridge Gourd & potatoes stir well. Add salt ,turmeric ,sugar,green chillies & stir.
On low heat, cover with a tight lid & cook for about 20 minutes. Remove the lid & stir.cook till the gourd is soft. Once the gourd is cooked.Taste and adjust seasonings.
Saute on medium- high heat till almost all of the liquid is absorbed and the vegetable is moist.
Add the sauteed shrimp and stir.Cover with a lid and rest for 5 minutes so the shrimp finish cooking in the steam. Serve hot with steamed rice.