Sometimes really delicious food is created by accident, or rather, by personal obligation. Take this kimcheese sammie. I used two semi-freezer-burned pieces of bread (one was the butt of the loaf), the last bits from a jar of expired kimchi, the last egg in the carton, sliced cheddar, and some wilted cilantro. None of the ingredients sounded appetizing on their own, but by combining them a super tasty sandwich arose. And perfectly edible food was saved and enjoyed.
Americans throw away $165 billion in food every year. Although this sandwich means nothing in the larger scheme of things, it's a step in the right direction.