I had a Google search for this question, but I was just wondering why nutritional yeast was called "Nooch" by vegans (in the UK anyway)?
nooch as a nickname for nutritional yeast seems to have originated at the Post Punk Kitchen forum way back. I say seems because I was not able to find any absolutely trustworthy source for this, but I did find a couple of weak ones (Urban Dictionary entry for nooch; this site and also this Post Punk Kitchen forum post that wonders about people outside of PPK using it).
As for the reason behind naming nutritional yeast
nooch, there seems to be no reason at all. One conjecture I would venture to make is that it may have something to do with the use of
nooch as a blank word with arbitrary meaning. Since it originated on a forum, it was probably jokingly (
nooch is also connected to phrase
snoch to the nooch which is used to indicate joking at the end of sentence) suggested as better name for nutritional yeast, which is, admittedly, not the greatest of names.