The base of this beer is a porter, which is the dominant character. The blueberry is only an accent, which could be turned up or down depending on the desired flavor. As written, the blueberry was a complimentary flavor in the background. It was entered in the fruit beer category because once fruit's added, that's where it goes (unless it's part of the style like framboise or kriek). When using real blueberries it allows the true "blueberry" flavor to come through rather than sweetening it with an artificial. In the end, I thought it tasted like a chocolaty/roasty/nutty beer with blueberry hints; it wasn't overly heavy yet filling. Another option is to make the base recipe and try a few smaller secondary fermentation batches with differing amounts of blueberry and different types of blueberry to find what you like. Good luck and have fun experimenting.
Prickly Goat Brewery