Piach Pata Aloo Begun diye Chingri Mach (Spring Onion with Potatoes Brinjal and Prawns)

Piach Pata Aloo Begun diye Chingri Mach
(Spring Onion with Potatoes Brinjal and Prawns)
Ingredients
1 small bowl of Medium size Chingri (Prawns)
1 bunch of Spring Onions cut into 1 inch size
2 Potatoes cut into medium size cubes
1 big Brinjal cut into medium size cubes
1 small size Tomato chopped
2 Green chillies slit
1/2 tsp Turmeric powder
1/2 tsp Coriander powder
Salt to taste
1/2 tsp Nigella seeds
1 tbsp Mustard oil

Method
Take a pan, add oil and heat it. Add nigella seeds and chillies. Sauté it for 2 minutes, add the potatoes and stir cook for 3 minutes. Add the brinjals, prawns and the tomato. Stir cook for 3 minutes more. Add the spring onions, tomato, turmeric powder, coriander powder and salt . Stir and cover the pan. Stirring it occasionally on low flame cook till the potatoes and brinjals are cooked. Don't add water while cooking,  it cooks in it's own juices.