Ghost Train is a very good Brewery in Birmingham Alabama. Nice and friendly place. Bought this Imperial sour because.....well, just because. Can't put off trying it any longer. This should be interesting. It actually did have some head but once I poured it, before I could get my photo ready, it was gone. That was quick. Deep yellow color. Somewhat hazy. I expected much more aroma out of an imperial but what little there is leans towards tangerine. Yes, it is definitely a sour. I can't even call this tart. Along with the tangerine there's a pithy orange peel. Totally hides the 13.9% alcohol. It's not even on the can, so be careful. This is no tutti frutti flavored punch. Finish brings nothing new to the equation. The whole beer seems rather flat and lacking effervescence. Sours are not my favorite and this isn't going to change my mind.