Warning: Don't read this if your hungry.
My sister and I have this running joke that we can't throw food away unless it has some kind of mold on it. If there are any leftovers, but not enough to feed more than one person, you still have to put them in a container and place them into the fridge. You can't immediately throw them out. That would be wasteful. What if someone wanted to eat them later? (Only that never happens.) We seem to agree that we are not allowed to throw them away until they have been in the fridge for a week or two and they have become completely inedible and lost all nutritional value.
Last night I pulled off the mother lode of wasteful. My spinach was getting a little wilted and I knew I had to cook it or throw it away. So I pulled out a pan, added water, and boiled it for several minutes. Then I turned the pan off, left it on the stove overnight, and threw it away in the morning.