First peel & clean prawns then wash it properly in running water.

Marinate prawns by adding salt, turmeric powder & red chilli powder.keep aside for 5/10 minutes

Meanwhile heat a pan add oil & fry cube sized potatoes until light brown.

In the same pan add some more oil & fry prawns until golden brown. Then keep aside

Again heat a pan add 3/4 tbsp mustard oil. Then add 1 tsp sugar. When sugar melts down to maroon colour add whole spices(green cardamom, cinnamon stick, cloves), 1 tsp cumin seeds, bay leaf. Stir it & let the seeds crackle.

Add finely chopped onion & green chilli, fry till light brown. With onion add turmeric powder, red chilli powder. Mix well fry for 1-2 minutes.

When onion becomes crispy and brown add ginger garlic paste and fry for 3-4 minutes.

Then add coriander powder, cumin powder & add some water and fry masala until oil separates.

When oil starts separating from masala, add tomato puree and some salt, cook for 3-5 minutes in medium heat.

When masala starts separating from pan, add fried prawns and potatoes. stir it for 1 minutes.

Then add hot water or normal water (accordingly for gravy). Stir well and cook for 5-7 minutes.

After 2 minute add garam masala/ chicken masala, chopped coriander leaves. Stir well and cook for another 5 minutes.

After 5 minute check the potatoes, if it is done. Then switch off the gas and serve with roti or rice