If you were already planning on going to the Telluride Mushroom Festival
(for the first time this year), and then got an invitation to give a talk on brewing beer, which came with a place to stay and a free pass for the festival, then I can say, from personal experience you would be pretty excited about the possibilities. If you later found out that Dr. Christian Ratsch had previously also done a talk on beer at the Mushroom Festival, well if you were me, you'd be positively effervescent!
So to ground this and get my ass in gear as far as putting together a presentation I'm putting out the question, dear readers, what topics/concepts in zymurgy would interest you most? This is brainstorming, so all suggestions will be considered.
How to brew? - a basic primer
History of ethanol use in ancient cultures for sacred ceremony? Including the simultaneous arising of baking and brewing in ancient Sumeria.
A smidgen of basic fermentation chemistry, and the link between fungi and yeasts.
A bit about the German Beer Law, and all the other things, not included in that law, added to beer for various flavorings and effects.
Bring books and possibly equipment (or pictures of equipment) for the show and tell part.
A list of links for folks to look for further information.