I've been homebrewing for a few years now, but I just read about Gruit Ale for the first time from the Art of Fermentation, and I'd love to make a batch. But for the life of me I can't locate Wild Rosemary for sale anywhere. Does anyone have an idea where (online) I can purchase this herb or what I can substitute for it? (Yarrow,Sweet Gale, and some of the other herbs I found on Amazon and on Homebrew sites).
Thanks,
Michael