Eat Here. Go There. has published a review of Duckfat.
Overall, I think this is great high brow pub grub in Portland. Its ever-so-slightly off the beaten path location only adds to the charm of it. The laid back vibe of both the staff and the patrons is contagious, and no one seems to be in a hurry for anything here (though I will say food comes out fast and hot). The exposed brick walls are lined with magnet boards to come up with your own magnetic poem or phrase to just while away the hours drinking and eating great food.