This sour is more on the tart side of the spectrum than intense sour. We found that was a theme from many of the beers from Jolly Pumpkin. Other than the tartness at the beginning of this taste there was only one other stand out flavor and even that was really only a hint of some kind of fruit. No ingredient was listed on the bottle but we threw around a couple of ideas on the kind of fruit used such as plum or pear. All in all we were pretty positive on this beer. Some liked it more than others, but no one disliked it by any means