Like most epidemics, it's difficult to trace back to patient zero. Somewhere out there was the first cool bar/cafe/whatever to start using Mason jars. They may

Like most epidemics, it's difficult to trace back to patient zero. Somewhere out there was the first cool bar/cafe/whatever to start using Mason jars. They may have been doing it for years before someone else saw it and copied it. Then there were two, then there were four, and pretty soon it's everyone. From where I'm sitting it's already a played out trend. You wouldn't catch a cool cafe nowadays using jars. But I bought some beer a few months ago and as a special offer it came with two free beer glasses. They're "jars" -- or rather, they have a thread, but no lid, and a handle like a beer glass.