LOL Whiffey..... you would have made a more *tasty* curry if you'd only saut�d (not burnt) the onions in ghee (and used more like five of the wee devils) for absolutely yonks (like half an hour), then added the garlic, chillies and chopped tomatoes... cooked it until all the water had evaporated and the oil from the ghee could be seen, then added your prawns and lightly fried them and finally added your ready made sauce (but why bother, you have a perfectly decent curry sauce already). This should then be simmered until the prawns are cooked.