# The ancient trick making food waste useful and tasty

- Published: 2026-06-04T23:10:26Z
- Updated: 2026-06-20T16:38:36Z
- Section: Business
- Language: English (en)
- Source: BBC News — https://www.bbc.com/news/articles/c78kmj2kyklo?at_medium=RSS&at_campaign=rss
- Tags: BBC News · Business
- Canonical: https://www.khabarestan.com/en/news/%D8%AA%D8%AE%D9%85%DB%8C%D8%B1-%D8%AA%D8%A8%D8%AF%DB%8C%D9%84-%D8%B2%D8%A8%D8%A7%D9%84%D9%87%D9%87%D8%A7%DB%8C-%D8%BA%D8%B0%D8%A7%DB%8C%DB%8C-%D8%A8%D9%87-%DA%AF%D9%86%D8%AC%DB%8C%D9%86%D9%87%D9%87%D8%A7%DB%8C-%D8%AE%D9%88%D8%B4%D9%85%D8%B2%D9%87-%D9%88-%D9%85%D9%81%DB%8C%D8%AF

Instead of throwing away byproducts of food processing, fermentation is making them valuable.

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