spicy seafood sauce recipe prawns

Ingredients
Tiger prawns-8 pieces
Onions(Finely chopped)-1 big
Garlic (finely chopped)-6 cloves
Ginger(Finely Chopped)-half spoon
Chopped Green chillis-4
Chopped capsicum-half
Tomato puree-3 spoon
White oil for cooking and frying
Salt and sugar
Red Chilli powder-to taste
Haldi powder-pinch
Lemon juice-1
Oyster sauce-2 spoons
Soya sauce-1 spoon 
Coriander leaves for garnish 

Method
1-Marinate the prawns with lemon juice,salt,oyster sauce,red chilli powder.Mix it well and fry in a pan in 3 spoons of white oil.2-In the same pan put some more oil and put chopped ginger and garlic first.Saute it for few seconds and add chopped onion and fry it well.
3-Now add tomato puree,oyster sauce, soya sauce,salt ,sugar,red chilli powder,lemon juice,turmeric powder.Saute it till it leaves oil.
4-Now add chopped green chillis,capsicum and saute again.5-Now add very little water and once it starts to boil add the prawns,cover and cook till the gravy is thick.
6-Garnish with coriander leaves.