From the archive: Food fraud and counterfeit cotton: the detectives untangling the global supply chain

We are raiding the Guardian long read archives to bring you some classic pieces from years past, with new introductions from the authors. This week, from 2021: Amid the complex web of international trade, proving the authenticity of a product can be near-impossible. But one company is taking the search to the atomic level By Samanth Subramanian. Read by Raj Ghatak. Help support our independent journalism at <a href="https://www.theguardian.com/longreadpod">theguardian.com/longreadpod</a>

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Three times a week, The Audio Long Read podcast brings you the Guardian’s exceptional longform journalism in audio form. Covering topics from politics and culture to philosophy and sport, as well as investigations and current affairs.