The Basic Brewing Radio/Video guys put out a low-tech lagering DVD in which they claim that they have a cheap, simple, and effective device that allows one to lager "even in the arkansas summer." I was curious to see if anyone has any knowledge of what this device might be and whether it really is novel. I'm betting it's a son of fermentation chiller type of thing. Or maybe a put-your-carboy-in-a-cooler-and-fill-it-with-ice-water sort of device.