No summarizing from me. You must go read it. (Then go buy Amber, Gold & Black: The History of Britain’s Great Beers. Support proper research. Beer: The Story of the Pint also belongs in your library, but it’s out of print, so buy something he earns royalty for.)
But I do have to mention the sentence in his post where I stopped, shook my head, laughed, rolled back my chair and slapped my knee. Honest.
Even Wikipedia is getting that right now.
Words you don’t want on your tombstone.