It is always better to use freshly-minced onion, rather than the dried and dehydrated versions, so as to retain the original flavor of the dish. It is not difficult to mince onion with a sharp knife. All you have to do is peel the onion, and make a series of horizontal and vertical cuts. Make sure to retain at least half an inch of the root part, so that the onion can be held together while mincing. Once you are done with the horizontal and vertical cuts, cut through the onion, so as to form small bits.