My wife and I found out about the Garlic Fest in Gilroy, California, just before we moved away, so we've always pined for a garlic festival. (By the way, there is nothing on this earth quite like following a big agricultural truck loaded full of fresh-picked garlic
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And then my wife recently learned there was a garlic festival only an hour's drive from where we live, and that our friends were going – so we drove to Saugerties, NY, today for the Hudson Valley Garlic Festival. hvgf.org
What a fun event! Lots of garlic, lots of food with garlic, live music, friendly people, farm people selling produce, crafters selling their wares, and all sorts of interesting food. Garlic gelato (thumbs up!). Garlic fudge (thumbs down). Garlic gyro (pretty good). Garlic cheese (pretty good, lots of varieties). Garlic jewelry of all kinds. Garlic shots (apparently non-alcoholic).
Did you know that out of the hundred-plus varieties of garlic, when they ran the DNA tests in 2003, there were only 18 different kinds?
There was one lady there who starts with plain cotton cloth, dyes it with her own patterns in natural indigo (rich blue color), and sells her own cloth and products (bags, shirts, skirts, tablecloths, etc.). I was impressed. Her company name is True Blue something
And we got the garlic cookbook autographed by the Queen of Garlic herself! 
There was also a dancing group of men holding white scarves, in some sort of ethnic costume – they were great, but I didn't see a sign explaining who they were
We stayed for five hours, and still didn't see everything. Things I didn't try: fried pickles, garlic chocolates, fried dough (always wanted to find out what this was – lines were too long!).
Wish I'd had time to stay and listen to more of the great music. Mark Rust in particular had some wonderful, humourous songs – markrust.com . Captain Squeeze and the Zydeco Moshers also put on a great show, with lots of audience participation: captainsqueeze.com