Nature and our ancestors wasted nothing, we should do the same.
Walking near the wild wood of Highwoods in Colchester a hawk flew out in front of me carrying a bird it had caught. The hawk was a reminder of the raw quality of nature that is life and death; the death of a bird to give life to the hawk.
The hawk will waste little as it feeds its little body with the body of the deceased bird; what will be left will be the bones, which will be recycled by nature to become part of other plants and animals. The hawk lives a sustainable life, taking only what it needs from its environment, wasting little.
Outrageous it is to read the claims that the rich nations waste 50% of the available food as people grow hungry in the poorer nations. The UK student fashion of pouring four pints of milk over their head as part of a craze in 2012 is one example of human disregard of sustainability in the global food system, which will have but one eventual outcome, mass starvation.
The responsibility is upon every individual to waste nothing, especially food.