https://daily.jstor.org/irelands-3000-year-old-refrigerators/
Apparently until someone double-dirty-dog-dares someone to try a bite. :^)
https://freerepublic.com/tag/bogbutter/index?tab=articles
Billy better build a bog butter barrel before Betty the booleyer brings
back the butter from Bailieborough bound in a brindle bull’s ball bag.