Heat a non stick pan.

Add 75 ml oil.

When oil is warm, add onion, garam masala and ginger garlic paste.

When this is turning golden brown, add tomatoes and salt.

Let it cook for 10 mins.

Add chilli powder, pepper powder and coriander powder.

Let it cook for 10 mins.

Take from fire and let it cool.

After it's cool, grind in a mixture grinder to make a nice paste.

:- Do not add water.

Heat the remaining oil and pour the mixture.

When the mixture separates, add prawns and cook for 10 mins and remove from heat.

:- Good with rice or roti.