Probably the most unique tasting beer I've ever had. I saw this back in September - http://www.spokane7.com/blog/ontap/tw-frankensour/ - but forgot all about it until I stumbled in Friday night shortly before River City's closing time. Really different stuff, like two completely different sour beers rolled into one: fruity, sweetish sour and much more acidic sourness, a bit like pickle juice. The 8oz pour was enough for a sitting, but was super glad not to have missed out on it.