From my reading, I understood that Greta was not so much a literal 'who' as an allusion to the possibility of Greta-ness hidden within us all Manticle.
I think this book has been the single most useful for me as probably my fave part of this ridiculous pastime is recipe design.
Back onto books again. Can anyone recommend a worthwhile one about understanding beer characteristics? I mean all the ones I have read were written by merchant bankers.
If you're happy to put up with the ads and B.S. (I am), the brewing network has podcasts about brewing. The one I listen to is: "the brewing network - the jamil show".