Nasa-funded project uses yeasts to turn plastics and other waste into edible proteins, fats and flavourings

Cookies produced from upcycled plastic may sound like something straight out of a dystopian sci-fi plot. But researchers say that they have succeeded in creating such a product as part of a Nasa-funded project aimed at feeding astronauts on future space missions.

The technology uses specially designed yeasts to transform plastics and agricultural waste into edible proteins, fats and flavourings. The resulting slurry is passed through a 3D printer to create a disc-shaped “cookie”.