A natural film keeps food fresh for longer and reduces waste.
Now, a startup from San Francisco has developed a private home service-system which converts food waste into nutrient-rich chicken feed.
Using an electrically-operated steel container with a charcoal odour filter, kitchen scraps are dried overnight.
Once the bin is full after a few weeks, users decant it into the boxes provided and arrange their pick-up through the app.
The grounds are then turned into chicken feed and sent out to farms.
The company charges a monthly flat rate for the bin, boxes and shipping. The app, meanwhile, allows users to measure their environmental impact.
Fruit and vegetable waste can already help produce new food ingredients and even solar cells.