First point of business: Portobello now offers pizza to go (other parts of the linked report are false). So now you don't have to wait 45 minutes for table.
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So when I've said in the past that there are no good slices in Portland, I was wrong. Give Pizza A Chance actually does some pretty solid work. When I originally tried their wares when I first moved here, it was toward the end of the day and the slices available were limited and had likely been sitting out for quite a while. I failed to take this into account in my thinking. After dropping by there for lunch this afternoon, I can say that their slices are better than most NYC slice options. They certainly blow Escape from NY out of the water.
I tried the margherita and the sausage and mushroom. The former was crisp and pliant, with dots of char on the underside. The mozzarella and basil used were fresh along with a couple of thin wedges of roma tomatoes. A mildly seasoned tomato sauce was there too, hiding under the mozz. The crust has some whole wheat in it to add a little extra depth of flavor (it adds a little bit of weight and chew as well, but it's a minor compromise in this case).
The sausage and mushroom slice was a little more pedestrian. The crust wasn't quite as well baked and the grease from the sausage soaked through a little bit. But it was plenty satisfying with Carlton Farms pork sausage and aged mozzarella.
I followed that up with ¡¡BEIGNETS!! from The Swamp Shack.