Half an hour before you propose to eat the curry, put the meat in, cut in fairly small chunks. It must have all the fat removed. Pork is always good, with chopped-up sausages of all kinds. Personally, I like mutton best and chicken least. If you use uncooked meat it must be cooked with the onions and curry powder.
People are naturally inclined to use leftover meats for curry.
This is perfectly all right, but if really good meat is used the result is correspondingly good. A dash of Worcestershire sauce and Angostura may be added during the cooking process. Bombay duck is dried in the oven, but popadums are not at all easy to cook without making them greasy. A fish-slice is useful in holding them down and removing them at the right moment from the pan. Shrimps, prawns and eggs can be used instead of meat.