Bog butter, has lost some of its creamy richness in the interceding millennia, turning to a fatty white wax called adipocere. In Ireland of 3000 years ago, there were limited options for storing your 77 pound barrels of butter. Archeologists are eternally grateful that the inhabitants near a Kildare bog chose to sink theirs into peat, and then forgot about it, because it was still there in 2009.