A better approach is to separate the leftovers of each dish into a number of smaller portions. For example, a knuckle of pork can be cut into three parts which can then be taken out of the freezer one at a time.
較好的作法是將剩菜分成小包裝，譬如一個蹄膀分做三小包，一次拿出一包來解凍等等。