An Irish farmer recently uncovered an ancient slab of butter by “pure luck” on his Donegal farm. The nearly 50-pound slab of “bog butter” is currently undated, but historians believe it ...

Donegal farmer uncovers 22kg slab of ancient bog butterOpens in new window What is bog butter and why are Irish farmers finding it thousands of years later?Opens in new window It had previously ...

Is there an upper limit to how long you can leave butter out on the side? And if so, what is it? Part of it has to do with storage. On one, more extreme end, bog butter ― butter buried under a ...