A method of preserving food scraps that dates back to the Roman Empire is being revived by British scientists to combat modern food waste. Researchers at the University of Cambridge have developed a process using fermentation, akin to ancient garum production, to transform vegetable peelings, bruised fruit, and stale bread into nutrient-rich pastes and sauces. The technique, which they call 'bio-preservation', locks in flavour and extends shelf life without refrigeration or artificial preservatives.
Lead researcher Dr. Eleanor Marsh described the breakthrough as 'a circular economy solution hiding in plain sight'. She explained that the process harnesses beneficial bacteria to break down organic matter, creating a tangy, umami-rich product that can be used in soups, stews, or as a spread. The innovation addresses the UK's staggering 9.5 million tonnes of annual food waste, much of which ends up in landfills producing methane.
Initial trials with supermarkets show the pastes retain 90% of their nutritional value for six months. The team is now working with food banks and manufacturers to scale production. Critics warn that consumer acceptance may be a hurdle, but Dr. Marsh remains optimistic: 'Our ancestors knew how to waste nothing. We're just updating their wisdom for a modern palate.'
The project has received £2 million in government funding and is expected to launch commercially by 2026.
