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The original was posted on /r/todayilearned by /u/CraftyFoxeYT on 2026-07-04 16:29:58+00:00.

Original Title: TIL Casu martzu (rotten cheese) is an Italian cheese that contains live maggots from the cheese fly used for fermentation in Sardinia. Despite the EU ban for hygiene-health concerns, it is still sold on the black market. In 2019, the illegal production worth was estimated to be €2–3 million