Kerala Prawn Roast

Which is prawn and which is shrimp ?? Some says , the smaller variety is called shrimp and the larger ones prawn . Some says both are different , but very closely related.Anyway as far as I understand , the two terms are interchangeably used in recipes everywhere . Prawns are one of our family favorite and here is a recipe from my good friend "Renmom"( I have a large circle of moms around me and thank you all for the wonderful recipes )

INGREDIENTS
1/2 lb Prawns , Shelled and deveined
2 onions ,Thinly sliced
1 piece kokum (fish tamarind)
1/2 tsp turmeric powder
1 tsp + 1/2 tsp gingergarlic paste
1 tsp + 1/2 tsp chilli powder
3/4 tsp coriander powder
1 tomato diced
1/2 tsp lime juice
1/4 tsp garam masala
few curry leaves
cilantro to garnish

DIRECTIONS

1. Boil the prawns in some water with 1/4 tsp turmeric powder, salt and a piece of Kokkum( kudam puli or fish tamarind) or 1/4 tsp tamarind paste.
   
2. Take it off fire as soon as the color of the prawns change and it curls up.
   
3. Marinate the cooked prawns in 1/2 tsp chilli powder 1/2 tsp garlic ginger paste and a pinch of salt. Shallow fry the marinated prawns and set it aside.
4. In a kadai saute the onions until its golden brown, add ginger garlic paste and tomato and saute it till the oil separates.
   
5. Add the chilli powder, coriander powder, and garam masala and saute it for another minute or 2. Add the fried prawns , lime juice and curry leaves .
   
6. Adjust the salt and take it off fire.Garnish with cilantro and serve hot.(If you would like the dish to have gravy add 3-4 tbsp of the water in which the prawns was cooked after adding the fried prawns. )