Bog butter

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a hydrocarbon of butterlike consistence found in the peat bogs of Ireland.

See also: bog

References in periodicals archive ?
The body is the latest in a number of discoveries made in the same bog over the last number of years which includes bog butter, leather shoes and axe heads.
New York, May 3 (ANI): A wooden vessel containing bog butter, thought to be 5,000 years old, dating from the Iron Age, was found buried in an underground store in Ireland.
We took it out with a spade and it turned out to be bog butter," Irish Central quoted Joe as telling the Irish Times.