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Irish bogs keep coughing up ancient, edible butter.

Peat bogs in Ireland and Scotland keep yielding buried lumps of 'bog butter', some of them thousands of years old. Cold, acidic and nearly oxygen-free, a bog is a natural refrigerator — and researchers who examined a 2,000-year-old find declared it theoretically still edible.

Step by step

  1. For centuries, Irish and Scottish farmers buried butter in peat bogs.
  2. Cold, acidic and airless, a bog is a natural refrigerator.
  3. Recovered lumps run to thousands of years old — one 2,000-year-old find was called still edible.

Source

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