Heat full quantity of oil in a pan. In cooking Korma many a man use ghee. If ghee is used proportionately equal quantity of oil is to be reduced, in other word the quantity of ghee added to cook the similar quantity of oil is to reduce. When oil becomes hot add cardamom and cinnamon. Stirring for a while add onion chopped and stir with short intervals in such a manner that onion cuts be fried evenly from all sides. Thus continue frying till the onion cuts turn into golden-brown color.