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?

  • 1
    Sounds just like gelatin.
    – Double AA
    Commented Jul 25, 2014 at 1:21
  • 2
    @DoubleAA, so a source for a machloket? Commented Jul 25, 2014 at 1:50
  • 2
    Serious question: If it's a fossil, is it still animal bones? Fun question: If a fossil has been dated to before brias ha'olam (לפ"ק) is can it be treif?
    – Yitzchak
    Commented Jul 25, 2014 at 16:08
  • from what I understand about yeast it isn't going to come from the bone but grow on top of it. That being said yeast is a bacteria and can grow anywhere. Not that all forms of yeast are useful in food products but they aren't from the things they are grown on. That being said most yeast for brewing is grown on malts.
    – Dude
    Commented Apr 5, 2016 at 19:41
  • 2
    @Dude, yeast is actually a fungus Commented Apr 5, 2016 at 23:08

1 Answer 1


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.

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