How did Portland become such a hamburger-eater's paradise? We expected to find all manner of local seafood, such as the exquisite salmon, smoked and fresh, and enormous razor clams and Dungeness crab that this region is deservedly known for, and a farm country bounty of fresh-from-the-earth produce. What we did not expect was the burger-mania evident in this city. There is apparently a local mega-burger competition to see who can serve up the largest, most generously garnished hamburgers in town. The full-dress version, usually with a name like The Giant, or The Killer, consists of a bacon cheeseburger, or two, lettuce, tomato, and onion, maybe pickle, with the added double whallop of ham and a fried egg to make it an only-in-Portland breakfast and lunch combo on a bun.