This article describes a beer created with yeast from fossilised remains of an ancient whale. From what I understand, the yeast imparts certain characteristics to the beer other than alcohol content. Would this affect its kashrut?
According to the article the yeast is from the swamp the bones were found in and is 'not nearly as old' as the bones.
I.e. the yeast just happened to be on the rescued bones and is an interesting hithertofore unknown subtype.
So it is not really Whale Bone Beer, just a gimmick.