Everybody knows you can visit tequila distilleries in the town of Tequila, Jalisco State.
But you can also visit distilleries of Mexico's less famous spirit/liquor, mezcal, in Oaxaca State.
I know because back in 2007 or 2008 with an expat friend and some backpackers we met in a hostel we did a road trip and visited some. I'm no longer in touch with that friend and I can't remember the name of our destination. I seem to recall that there was one village or town that was known as, or that likened itself as, the "home" of mezcal. I think there were even roadsigns or banners declaring it.
However Googling for the place is proving fruitless. I'm just finding individual organized tours and statements that mezcal is produced all around the valleys of Oaxaca. Does anybody know the actual name of the place I'm referring to so I can suggest it to my friend travelling in Mexico now?