My experience is that an overfilled, messy fridge is the best way to waste large amounts of food, because you never find anything you need and you forget what you already have and buy more of everything and some gets wasted too. I do try and have a day to use leftovers and kind of cleanup but does not always work for me. So I now have the practice of not going to the grocery store until I finish up my stock. That is easier said than done so i do have to make one or two smaller trips. But this way...